# Troubleshooting Unified CM Smart Licensing Canonical: https://warmtransfer.net/knowledge/cucm-smart-licensing-troubleshooting Last verified: 2026-10-01 After installation, Unified CM operates under a 90-day evaluation period until registered with Cisco Smart Software Manager (CSSM)[^21]. Troubleshooting smart licensing requires verifying registration states, transport connectivity, and entitlement compliance across the cluster[^2][^32]. ## How it works The Cisco Smart License Manager network service runs exclusively on the Unified CM publisher and cannot be started or stopped via the graphical interface or CLI[^40]. An initial registration to CSSM remains valid for 1 year and renews automatically every 6 months, though an administrator can force an update using Actions > Renew Registration Now[^33][^31]. License authorization persists for 90 days if connectivity to CSSM or an on-premises satellite is interrupted, with automatic background renewals scheduled every 30 days or triggered manually via Actions > Renew Authorization Now[^3][^1]. WarmTransfer's reading of the sources is that a registered cluster that loses contact with CSSM keeps a valid authorization for up to 90 days after its last renewal, preventing short outages from disrupting service immediately[^27]. Regarding reporting schedules, sources disagree: the System Configuration Guide says licence usage information updates automatically once every 24 hours[^55], whereas the Feature Configuration Guide says licence usage information updates once every 6 hours and can be updated manually with Update Usage Details[^56]. Moving an unassigned device to an owner user ID shifts its accounting category from Unassigned Devices to Users in the Unified CM License Usage Report[^54]. An Enhanced Plus licence covers a user with 2 associated devices, while a UWL licence covers a user with 3 and up to 10 associated devices[^18][^57]. For meeting room endpoints, a TelePresence Room licence covers both the TelePresence device and a phone only when both have the same OwnerUserID; if the owners differ, 2 licences are needed[^52]. ## Registration and evaluation enforcement When the evaluation period ends without registration, Unified CM stops allowing new users or devices to be added until it is registered[^19]. Furthermore, a secure SIP trunk cannot be deployed while Unified CM runs in the 90-day evaluation period; the system must be registered to a Smart Account with export-controlled functionality allowed[^20]. Administrators enable higher encryption capabilities when generating the product instance registration token in CSSM by checking 'Allow export-controlled functionality on the products registered with this token'[^22]. Alternatively, an export-restricted licence can be requested via the CLI command `license smart export request local CUCM_Export_Restricted_Authorization_Key`[^8]. TAC technote 212915 lists the Unified CM registration statuses as Unidentified/Unregistered, Registered, and Unregistered-registered Expired[^32]. The documented authorization statuses are No License in use, Evaluation Mode, Evaluation Expired, Authorized, Out of compliance and Authorization Expired[^2]. When a cluster falls out of compliance, Unified CM enforces a non-compliant licence state only after a 90-day overage period[^29]. Once non-compliance is enforced, Unified CM does not allow devices or users to be provisioned, and blocks user changes that affect licensing, such as turning IM and Presence or Mobility on or off[^16][^17]. Deregistering Unified CM from CSSM immediately releases all its licence entitlements back to the virtual account for other product instances to use[^13]. If Unified CM is deregistered while the cluster is in mixed-mode encryption, encryption stays on and the SmartLicenseExportControlNotAllowed alert tells the administrator to move the cluster to non-secure mode[^12]. Reregistering Unified CM with a token from a different virtual account moves the product instance to that virtual account[^34]. ## Transport methods and connectivity From Unified CM Release 15SU2, Call Home is deprecated as a Smart Licensing transport mode and Smart Transport is introduced as the new transport mode[^7]. Direct cloud connectivity requires DNS that resolves tools.cisco.com for Call Home and smartreceiver.cisco.com for Smart Transport[^14]. WarmTransfer's reading of the sources is that Unified CM 12.5(1) most likely has no Smart Transport option and uses Call Home-era transports (direct, proxy, transport gateway, satellite)[^58]. | Platform State | Transport Behavior | | --- | --- | | Fresh install at 15SU2 or later | Supports Smart Transport exclusively[^24]. | | Upgrade or migration to 15SU2+ | Switches automatically to Smart Transport if `smartreceiver.cisco.com` is reachable[^4]. | | Upgrade failure to reach Smart Transport | Falls back automatically to Call Home transport mode[^23]. | WarmTransfer's reading of the sources is that a fresh 15SU2+ Unified CM install in direct mode probably cannot register while smartreceiver.cisco.com is unresolvable or unreachable, because fresh installs support only Smart Transport and have no Call Home fallback[^26]. Unified CM's HTTP/HTTPS proxy transport setting takes a proxy IP address or host name and port, with optional authentication by user name and password[^30]. For offline architectures, Cisco Smart Software Manager satellite supports Smart Transport from satellite version 7-201907 onwards[^38]. Transport settings for a satellite take the satellite's address and port in the form fqdn:port[^37]. A Unified CM cluster in dual-stack mode supports a satellite configured with IPv4 and IPv6 addresses[^15]. ## Specific License Reservation (SLR) Enabling Specific License Reservation allows completely offline licensing, but the customer must open a case with the Cisco Licensing team to get the SLR option enabled on a Smart Account for Unified CM[^43]. Specific License Reservation on Unified CM is configured from the CLI only; there is no GUI option[^41]. Licences reserved for a Unified CM SLR instance stay blocked in Cisco License Central until the product releases them with a return code[^47]. When Specific License Reservation is enabled on Unified CM, voucher generation for cloud onboarding is not supported, and Unified CM does not automatically borrow licences from a higher tier[^45][^44]. In connected deployments, CSSM substitutes available higher-tier Unified CM licences to cover lower-tier requirements[^51]. Under Specific License Reservation, the status NOT AUTHORIZED - RESERVED means the reserved entitlement does not cover current licence consumption[^46]. A Session Management Edition cluster registered with Specific License Reservation needs a minimum set of licences reserved in CSSM when the SLR authorization code is generated[^49]. An operational Unified CM returns SLR licences with 'license smart reservation return', which produces a return code; for a non-operational product the customer must contact TAC to remove the product instance from the Smart Account[^48]. ## Diagnosing failures For Unified CM Smart Licensing registration problems, TAC asks for a packet capture taken from the CUCM CLI and the License Manager logs[^53]. Administrative registration can be forced or re-run from the CLI with `license smart register idtoken [force]`, and Unified CM can be deregistered with `license smart deregister`[^11]. In Cisco HCS with HLM/CAA, error UCAPI1010 'Registration with Smart Agent failed' means checking the proxy connection and Unified CM connectivity to CSSM, then the CAA/HLM logs[^25]. Known defects can affect transport and compliance: - Known bug CSCvh16069 is that a Smart Licensing satellite cannot borrow a licence from a higher tier to bring Unified CM into compliance[^6]. - Known bug CSCvc94366 is that Unified CM Smart Licensing registration does not accept proxy port 443[^5]. The documentation lists specific Voice and Video alerts for licensing conditions[^36][^35]. Provisioning blocks trigger Voice and Video alerts SmartLicenseNoProvisionEvalExpired, SmartLicenseNoProvisionOutOfCompliance and SmartLicenseNoProvisionAuthorizationExpired[^36]. Communication and renewal issues trigger Voice and Video alerts SmartLicenseCommunicationError, SmartLicenseRenewAuthFailed, SmartLicenseRenewRegistrationFailed, SmartLicenseRegistrationExpired, SmartLicenseInOverageOutOfCompliance and SmartLicenseInEval[^35]. ## See also See also [Cisco Smart Licensing for collaboration](https://warmtransfer.net/knowledge/cisco-smart-licensing). See also [UC licensing models compared](https://warmtransfer.net/knowledge/uc-licensing-models). See also [Unified CM RTMT alerts and monitoring](https://warmtransfer.net/knowledge/cucm-rtmt-alerts). ## Applicability Applies to: Cisco Unified Communications Manager, Cisco Smart Software Manager satellite, Cisco Smart Software Manager, Cisco Hosted Collaboration Solution, and Cisco Unified Real-Time Monitoring Tool. Deployments: cloud, on-premises, and partner-hosted. Sources checked 2026-10-01. Transport changes introducing Smart Transport and deprecating Call Home apply specifically from Unified CM Release 15SU2[^7][^4]. ## What remains uncertain Smart Transport firewall and proxy requirements beyond hostname are not covered by the sources below. Call and registration impact of enforced mode is not covered by the sources below. Whether Authorization Expired starts the 90-day overage clock or blocks immediately is not covered by the sources below. SSM On-Prem minimum version and sync behaviour for Unified CM 15SU2+ is not covered by the sources below. CSSM or Smart Receiver trust certificate errors on registration are not covered by the sources below. RTMT SmartLicense alert descriptions and default severities are not covered by the sources below. Resolving whether the license usage update interval is 24 hours or 6 hours is not covered by the sources below. The fix status of CSCvh16069, CSCvc94366, CSCwf47221, and CSCwf47223 is not covered by the sources below. ## Sources [^1]: Unified CM renews licence authorization automatically every 30 days, and an administrator can force it with Actions > Renew Authorization Now on the Licence Management page. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Additional Tasks > Renew Authorization. Checked 2026-10-01. [^2]: TAC technote 212915 lists the Unified CM licence authorization statuses as No License in use, Evaluation Mode, Evaluation Expired, Authorized, Out of compliance and Authorization Expired. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Smart Licensing States in UCM > Authorization Status. Checked 2026-10-01. [^3]: Unified CM licence authorization is valid for 90 days and expires after 90 days if the system is not connected to CSSM or a satellite. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview (authorization paragraph). Checked 2026-10-01. [^4]: After upgrade or migration to 15SU2 or later, Unified CM moves to Smart Transport automatically if it can reach smartreceiver.cisco.com. Source: [Release Notes for Cisco Unified Communications Manager and the IM and Presence Service Release 15SU2](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/15/SU2/cucm_b_release-notes-for-cucm-imp-15su2.html), Smart Receiver Transport. Checked 2026-10-01. [^5]: Known bug CSCvc94366 is that Unified CM Smart Licensing registration does not accept proxy port 443. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Known Bugs. Checked 2026-10-01. [^6]: Known bug CSCvh16069 is that a Smart Licensing satellite cannot borrow a licence from a higher tier to bring Unified CM into compliance. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Known Bugs. Checked 2026-10-01. [^7]: From Unified CM Release 15SU2, Call Home is deprecated as a Smart Licensing transport mode and Smart Transport is introduced as the new transport mode. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview (15SU2 note). Checked 2026-10-01. [^8]: On Unified CM, 'license smart export request local ' requests an export-restricted licence, and the Unified CM feature name is CUCM_Export_Restricted_Authorization_Key. Source: [Command Line Interface Reference Guide for Cisco Unified Communications Solutions, Release 15 and SUs - License Commands](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/15/cucm_b_cli_reference_guide_release_15/cucm_b_cli_reference_guide_release_1401_chapter_0100.html), license smart export request local. Checked 2026-10-01. [^9]: The Unified CM CLI command 'license smart factory reset' clears all licensing information except the evaluation countdown and the SLR sequence number. Source: [Command Line Interface Reference Guide for Cisco Unified Communications Solutions, Release 15 and SUs - License Commands](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/15/cucm_b_cli_reference_guide_release_15/cucm_b_cli_reference_guide_release_1401_chapter_0100.html), license smart factory reset. Checked 2026-10-01. [^10]: The Unified CM CLI command 'license smart transport gateway ' is not supported on systems using Smart Transport mode. Source: [Command Line Interface Reference Guide for Cisco Unified Communications Solutions, Release 15 and SUs - License Commands](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/15/cucm_b_cli_reference_guide_release_15/cucm_b_cli_reference_guide_release_1401_chapter_0100.html), license smart transport gateway. Checked 2026-10-01. [^11]: Unified CM can be registered from the CLI with 'license smart register idtoken [force]', and deregistered with 'license smart deregister'. Source: [Command Line Interface Reference Guide for Cisco Unified Communications Solutions, Release 15 and SUs - License Commands](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/cli_ref/15/cucm_b_cli_reference_guide_release_15/cucm_b_cli_reference_guide_release_1401_chapter_0100.html), license smart register idtoken; license smart deregister. Checked 2026-10-01. [^12]: If Unified CM is deregistered while the cluster is in mixed-mode encryption, encryption stays on and the SmartLicenseExportControlNotAllowed alert tells the administrator to move the cluster to non-secure mode. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Additional Tasks > Deregister (note). Checked 2026-10-01. [^13]: Deregistering Unified CM from CSSM immediately releases all its licence entitlements back to the virtual account for other product instances to use. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Additional Tasks > Deregister. Checked 2026-10-01. [^14]: For direct connection to CSSM, Unified CM needs DNS that resolves tools.cisco.com for Call Home and smartreceiver.cisco.com for Smart Transport. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), System Licensing Prerequisites > Plan Your System Licensing (Direct option). Checked 2026-10-01. [^15]: A Unified CM cluster in dual-stack mode supports a satellite configured with IPv4 and IPv6 addresses. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Task Flow > Configure Connection (note). Checked 2026-10-01. [^16]: Once non-compliance is enforced, Unified CM does not allow devices or users to be provisioned. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Compliance. Checked 2026-10-01. [^17]: In the enforced state, Unified CM blocks user changes that affect licensing, such as turning IM and Presence or Mobility on or off. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Compliance. Checked 2026-10-01. [^18]: In Unified CM licensing, the Enhanced Plus licence covers a user with two associated devices. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), Maximum Number of Devices Per User. Checked 2026-10-01. [^19]: When the evaluation period ends without registration, Unified CM stops allowing new users or devices to be added until it is registered. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview > Product Instance Evaluation Mode. Checked 2026-10-01. [^20]: A secure SIP trunk cannot be deployed while Unified CM runs in the 90-day evaluation period; the system must be registered to a Smart Account with export-controlled functionality allowed. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview > Product Instance Evaluation Mode (note). Checked 2026-10-01. [^21]: After installation, Unified CM runs under a 90-day evaluation period until it is registered with Cisco Smart Software Manager. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview > Product Instance Evaluation Mode. Checked 2026-10-01. [^22]: When generating the product instance registration token in CSSM, checking 'Allow export-controlled functionality on the products registered with this token' enables higher encryption levels for products registered with that token. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Task Flow > Obtain the Product Instance Registration Token. Checked 2026-10-01. [^23]: On an upgraded or migrated 15SU2+ cluster, if the connection to smartreceiver.cisco.com fails, Unified CM falls back to Call Home mode. Source: [Release Notes for Cisco Unified Communications Manager and the IM and Presence Service Release 15SU2](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/15/SU2/cucm_b_release-notes-for-cucm-imp-15su2.html), Smart Receiver Transport. Checked 2026-10-01. [^24]: Unified CM nodes freshly installed at 15SU2 or later support only Smart Transport for Smart Licensing. Source: [Release Notes for Cisco Unified Communications Manager and the IM and Presence Service Release 15SU2](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/15/SU2/cucm_b_release-notes-for-cucm-imp-15su2.html), Smart Receiver Transport. Checked 2026-10-01. [^25]: In Cisco HCS with HLM/CAA, error UCAPI1010 'Registration with Smart Agent failed' means checking the proxy connection and Unified CM connectivity to CSSM, then the CAA/HLM logs. Source: [Cisco Hosted Collaboration Solution Smart Licensing Guide, Release 12.5 - Troubleshooting Smart Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/hcs/12_5/HCS_Solution/Smart_Licensing/chcs_b_hcs-smart-licensing-guide/chcs_m_troubleshooting-smart-licensing.html), Troubleshooting Smart Licensing > UCAPI1010. Checked 2026-10-01. [^26]: A fresh 15SU2+ Unified CM install in direct mode probably cannot register while smartreceiver.cisco.com is unresolvable or unreachable, because fresh installs support only Smart Transport and have no Call Home fallback (inferred). Source: [Release Notes for Cisco Unified Communications Manager and the IM and Presence Service Release 15SU2](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/rel_notes/15/SU2/cucm_b_release-notes-for-cucm-imp-15su2.html), Smart Receiver Transport. Checked 2026-10-01. [^27]: A registered Unified CM that loses contact with CSSM probably keeps a valid authorization for up to 90 days after the last successful renewal, so a short outage is not immediately service-affecting (inferred). Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview (authorization paragraph). Checked 2026-10-01. [^28]: With SSM On-Prem or a satellite, the licence hierarchy substitution breakdown is displayed differently (CSCwf47221), and available quantities can be shown incorrectly (CSCwf47223). Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Substitution (note). Checked 2026-10-01. [^29]: Unified CM enforces a non-compliant licence state only after a 90-day overage period. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Compliance. Checked 2026-10-01. [^30]: Unified CM's HTTP/HTTPS proxy transport setting takes a proxy IP address or host name and port, with optional authentication by user name and password. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Task Flow > Configure Connection. Checked 2026-10-01. [^31]: Unified CM renews its Smart Licensing registration automatically every six months, and Actions > Renew Registration Now forces a manual renewal. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview; Additional Tasks > Renew Registration. Checked 2026-10-01. [^32]: TAC technote 212915 lists the Unified CM registration statuses as Unidentified/Unregistered, Registered, and Unregistered-registered Expired. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Smart Licensing States in UCM > Registration Status. Checked 2026-10-01. [^33]: Unified CM's initial Smart Licensing registration is valid for one year. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview (registration paragraph). Checked 2026-10-01. [^34]: Reregistering Unified CM with a token from a different virtual account moves the product instance to that virtual account. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Additional Tasks > Reregister. Checked 2026-10-01. [^35]: The Release 15 RTMT guide lists the Voice and Video alerts SmartLicenseCommunicationError, SmartLicenseRenewAuthFailed, SmartLicenseRenewRegistrationFailed, SmartLicenseRegistrationExpired, SmartLicenseInOverageOutOfCompliance and SmartLicenseInEval. Source: [Cisco Unified Real-Time Monitoring Tool Administration Guide, Release 15 and SUs - Performance Counters and Alerts](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/service/15/rtmt/cucm_b_cisco-unified-rtmt-administration-15/cucm_m_performance-counters-and-alerts-15.html), Voice and Video Alerts. Checked 2026-10-01. [^36]: The Release 15 RTMT guide lists the Voice and Video alerts SmartLicenseNoProvisionEvalExpired, SmartLicenseNoProvisionOutOfCompliance and SmartLicenseNoProvisionAuthorizationExpired. Source: [Cisco Unified Real-Time Monitoring Tool Administration Guide, Release 15 and SUs - Performance Counters and Alerts](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/service/15/rtmt/cucm_b_cisco-unified-rtmt-administration-15/cucm_m_performance-counters-and-alerts-15.html), Voice and Video Alerts. Checked 2026-10-01. [^37]: When Unified CM uses a Smart Software Manager satellite, the transport setting takes the satellite's address and port in the form fqdn:port. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Task Flow > Configure Connection. Checked 2026-10-01. [^38]: Cisco Smart Software Manager satellite supports Smart Transport from satellite version 7-201907 onwards. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), System Licensing Prerequisites (satellite option). Checked 2026-10-01. [^39]: For Unified CM 12.5, the SLR technote lists the smart agent log at activelog/cm/trace/slm/log4j/slm.log and Call Home logs in gch.log and tp.log. Source: [Enable Specific License Reservation for CUCM Version 12.5](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/214381-smart-license-reservation-for-cucm-versi.html), Troubleshoot. Checked 2026-10-01. [^40]: The Cisco Smart License Manager network service runs only on the Unified CM publisher and cannot be started or stopped from the UI or CLI. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Background Information > Cisco Smart License Manager Service. Checked 2026-10-01. [^41]: Specific License Reservation on Unified CM is configured from the CLI only; there is no GUI option. Source: [Enable Specific License Reservation for CUCM Version 12.5](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/214381-smart-license-reservation-for-cucm-versi.html), Background Information. Checked 2026-10-01. [^42]: RESERVATION IN PROGRESS means a reservation request was generated but no authorization code is installed yet; Unified CM stays in Evaluation Mode meanwhile. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), License Authorization Statuses (offline deployment). Checked 2026-10-01. [^43]: To get the Specific License Reservation option enabled on a Smart Account for Unified CM, the customer must open a case with the Cisco Licensing team. Source: [Enable Specific License Reservation for CUCM Version 12.5](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/214381-smart-license-reservation-for-cucm-versi.html), Prerequisites. Checked 2026-10-01. [^44]: With Specific License Reservation enabled, Unified CM does not automatically borrow licences from a higher tier. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Specific License Reservation > Update License Reservation. Checked 2026-10-01. [^45]: When Specific License Reservation is enabled on Unified CM, voucher generation for cloud onboarding is not supported. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Specific License Reservation (note). Checked 2026-10-01. [^46]: Under Specific License Reservation, the status NOT AUTHORIZED - RESERVED means the reserved entitlement does not cover current licence consumption. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), License Authorization Statuses (offline deployment). Checked 2026-10-01. [^47]: Licences reserved for a Unified CM SLR instance stay blocked in Cisco License Central until the product releases them with a return code. Source: [Enable Specific License Reservation for CUCM Version 12.5](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/214381-smart-license-reservation-for-cucm-versi.html), Remove Licenses or Product Instance. Checked 2026-10-01. [^48]: An operational Unified CM returns SLR licences with 'license smart reservation return', which produces a return code; for a non-operational product the customer must contact TAC to remove the product instance from the Smart Account. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Specific License Reservation > Remove licenses or product instance. Checked 2026-10-01. [^49]: A Session Management Edition cluster registered with Specific License Reservation needs a minimum set of licences reserved in CSSM when the SLR authorization code is generated. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Smart Software Licensing Overview > Session Management Edition. Checked 2026-10-01. [^50]: Unified CM Smart Transport supports TLS 1.3, while Call Home uses the configured minimum TLS version for compatibility. Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), Minimum TLS Version Support (Smart Software Licensing chapter). Checked 2026-10-01. [^51]: CSSM substitutes available higher-tier Unified CM licences to cover lower-tier requirements; for example, 100 CUWL licences cover 10 CUWL plus 50 Enhanced Plus requirements and leave 40 CUWL available. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Substitution. Checked 2026-10-01. [^52]: A TelePresence Room licence covers both the TelePresence device and a phone only when both have the same OwnerUserID; if the owners differ, two licences are needed. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), Licence types > TelePresence Room. Checked 2026-10-01. [^53]: For Unified CM Smart Licensing registration problems, TAC asks for a packet capture taken from the CUCM CLI and the License Manager logs. Source: [Configure CUCM Smart Licensing - Direct Model](https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/212915-configure-cucm-smart-licensing-direct.html), Troubleshoot. Checked 2026-10-01. [^54]: Assigning an owner user ID to a device moves it from Unassigned Devices to Users in the Unified CM License Usage Report. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Usage Report. Checked 2026-10-01. [^55]: The Unified CM Release 15 System Configuration Guide says licence usage information updates automatically once every 24 hours (disputed). Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/15/systemConfig/cucm_b_system-configuration-guide-15/cucm_b_system-configuration-guide-14_chapter_01.html), License Usage Report / Update Usage Details. Checked 2026-10-01. [^56]: The Unified CM Release 15 Feature Configuration Guide says licence usage information updates once every six hours and can be updated manually with Update Usage Details (disputed). Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), License Usage Report. Checked 2026-10-01. [^57]: In Unified CM licensing, a UWL licence covers a user with three and up to ten associated devices. Source: [Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/cucm_b_feature-configuration-guide-for-15/cucm_m_licensing.html), Maximum Number of Devices Per User. Checked 2026-10-01. [^58]: Unified CM 12.5(1) most likely has no Smart Transport option and uses Call Home-era transports (direct, proxy, transport gateway, satellite) (inferred). Source: [System Configuration Guide for Cisco Unified Communications Manager, Release 12.5(1) - Smart Software Licensing](https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/systemConfig/cucm_b_system-configuration-guide-1251/cucm_b_system-configuration-guide-1251_chapter_01011011.html), Smart Software Licensing Overview; System Licensing Prerequisites. Checked 2026-10-01.