# Webex Go and mobile calling options

Canonical: https://warmtransfer.net/knowledge/webex-go-mobile-calling

Last verified: 2026-09-25

Cisco describes Webex Go as a mobility solution that offers a secure, compliant calling experience with flexible deployment and connectivity options[^24]. Architecturally, Webex Calling treats a Webex Go device as a SIP-registered device, which makes it one more endpoint for delivering the user's business calls[^54].

## Deployment Models and Device Types

Webex Go supports both personal phones and business-supplied devices[^18][^16]. For personal mobile phones (BYOD), Webex Go adds the user's Webex Calling business number to their personal phone as a second line through an eSIM[^18]. Cisco states that Webex Go BYOD calls have higher media quality than Webex App over-the-top VoIP calls on the personal data plan, because business calls go over the mobile voice network instead of data[^17]. To activate BYOD Webex Go, the phone must be carrier unlocked, dual-SIM capable, and able to support an active eSIM profile[^25]. The eSIM activation uses a single-use QR code delivered by email[^35].

For business-supplied devices, starting with AT&T in the United States, Webex Go makes the wireless number replace the user's fixed Webex Calling business number[^16]. AT&T markets Webex Go under AT&T Cloud Voice with Webex, stating that business calls are placed from the phone's native dialer and that BYOD operates on compatible smartphones with eSIM or dual-SIM support[^11].

If a user wants to keep a published business number but cannot or will not port it to a Webex-certified provider, Cisco's alternate-identity approach assigns the published number as a secondary number[^4]. Under this alternate-identity approach, incoming calls to that published secondary number ring all of the user's devices, including the Webex Go device[^4], and the External Calling Line Identity policy can make outgoing calls present the published secondary number as caller ID[^5].

## Licensing, Providers, and Provisioning

Webex Go users require a Webex Calling Professional license[^50]. Service is purchased from Webex-certified mobile calling providers, which administrators can find in the PSTN section of Control Hub[^21] or at admin.webex.com/calling/pstn/providers by filtering on the Webex Go service type[^52]. Webex connects directly with mobile providers, and the provider connects to the Webex Calling platform to route business calls to activated devices[^51].

Webex Go prerequisites include a mobile plan, a phone number, and a device or eSIM from a certified mobile calling provider[^48]. The provider must validate the mobile number and enable it for Webex before it can be provisioned in Webex Calling[^49]. For AT&T deployments, a prerequisite is a valid AT&T Foundational Account Number (FAN)[^47], and Webex Go with AT&T supports only 1 AT&T FAN per Webex organization[^13].

| Setting or Action | Path or Requirement | Behavior |
| --- | --- | --- |
| Add mobile numbers | Services > PSTN & Routing > Numbers > Manage > Add[^3] | Select location, choose 'Mobile Number', select operator[^3]; validated upon addition and inactive until assigned[^36] |
| Location assignment | Must match subscriber location[^22] | Number cannot be assigned properly if added to the wrong location[^22] |
| Assign to user | User Calling tab > Add Number under Directory Numbers (or Primary)[^8] | Select number with Webex mobile tag; device appears on user's Devices tab[^8] |
| AT&T activation states | Control Hub[^9] | Displays Pending, Successful, or Error[^9] |
| AT&T User Guide | Control Hub Add Numbers screen[^12] | Displayed from December 17, 2025 for AT&T-provisioned Webex Go numbers[^12] |

A February 25, 2025 release note states that Webex Go from Certified Calling Providers can be assigned to users in 16 countries: the United States, United Kingdom, France, Austria, Belgium, Denmark, Germany, Italy, Ireland, Luxembourg, Mexico, Netherlands, Poland, Spain, Sweden, and Switzerland[^1].

## Call Handling and Native Mobile Experience

Webex Go calls originate from the mobile phone's built-in Phone app, and on a device with multiple eSIMs, the user may need to pick the correct SIM for outbound calls[^44]. Users cannot change their caller ID from the Webex mobile app[^45]. For Webex Go, the Webex mobile app Calling Mode setting should be set to 'My Mobile Operator' so calls route over the cellular voice network rather than VoIP over data[^20].

When an incoming call rings all of a user's devices, declining on the Webex Go device lets the remaining devices continue ringing[^23]. A user can dial *11 directly on the Webex Go device to pull an active call from another of their devices onto the Webex Go device[^53]. When a call on the Webex Go number is connected and the user is signed in to the Webex App on the same phone, the call can be managed in progress from the app[^7]. The Webex App mobile call widget provides in-call controls—specifically Hold, Transfer, Video Meeting, Open Webex, and End call—for calls placed over Webex Go or over a mobile network operator that uses Cisco call control for signalling[^19].

By default, the Webex Go device overrides Do Not Disturb (DND) and alerts unless explicitly configured not to[^27]. In Control Hub, 'DND Override for mobile devices' is enabled by default, routing calls to Webex Go devices during DND and Quiet Hours unless an administrator turns it off[^26]. This DND Override applies only to Webex Go across Mobile Operator and BYOD deployments, controlling whether Webex Go devices alert when a user sets DND or Quiet Hours or is presenting[^29].

### Operational Limitations

After Webex Go is enabled, users of the Webex mobile companion app must sign out and back in, as well as enable notifications for the Webex App[^43]. Cisco states that phone features manipulating voice calls must be disabled for Webex Go compatibility, including Apple iOS Live Voicemail and Hold Assist Detection[^40]. Call blocking and filtering configured on an Android or iOS handset affects only the Webex Go device, leaving the user's other Webex devices alerting normally[^38]. Furthermore, device compatibility, mobility capabilities (such as VoWiFi, roaming, data, texting, and usage plans), and select carrier-specific calling features depend on the mobile provider[^39], and network conditions can influence whether incoming-call alerts reach the Webex Go device[^42].

## Complementary Mobile Calling Options

Webex Calling includes additional mobile connectivity mechanisms alongside Webex Go[^57][^31][^60]:

- **Single Number Reach (Office Anywhere):** Makes calls to a user's work number also ring other phone numbers, allowing users to make, receive, and move calls to or from any desk or mobile phone designated as a single number reach number[^57]. Users can configure single number reach in User Hub only after an administrator sets it up for their location and enables it for them[^55]. Outgoing calls placed with single number reach use the caller ID setting of the user's Webex Calling primary number[^56]. Incoming-call options per number include 'Do not forward calls' (calls do not forward even when call forwarding is active) and 'Answer confirmation' (the answering party must press a key before connection)[^58].
- **Dial-via-Office (DvO):** When enabled by an administrator, the Webex App provides 3 work-call modes: Voice over IP, Mobile voice network, and Autoselect[^31]. In 'Mobile voice network' mode, a call initiated from the Webex mobile app first rings the user's own phone, and once answered, rings the destination party[^30].
- **Switch to Mobile:** During a call in the Webex App, a user can tap More > Switch to <number> to move the call to the native Phone app with a short pause during the transition, provided the administrator has enabled the feature for that mobile number[^60].

## Emergency Calling on Mobile Devices

On mobile platforms with a cellular connection, the Webex App does not use RedSky for emergency calls[^32]. The emergency call routes through the native dialer over the cellular network, accompanied by an app pop-up confirming placement over cellular[^32]. If that cellular emergency call fails, the pop-up offers to place the call through the Webex App over Wi-Fi, though Wi-Fi calls do not provide emergency services with the caller's location in the manner cellular calls do[^34].

## See also

- See also [Webex Calling locations and number management](https://warmtransfer.net/knowledge/webex-calling-locations-numbers).
- See also [Webex Calling license types and entitlements](https://warmtransfer.net/knowledge/webex-calling-licensing).
- See also [Webex Calling PSTN options and selection](https://warmtransfer.net/knowledge/webex-calling-pstn-options).
- See also [Teams Phone Mobile](https://warmtransfer.net/knowledge/teams-phone-mobile).

## Applicability

Applies to: Cisco Webex Go, Cisco Control Hub, Cisco Webex App, Cisco Webex Calling, and AT&T Cloud Voice with Webex. Deployments: on-premises, multi-tenant, and unspecified. Sources checked 2026-09-25. Webex Go requires a Webex Calling Professional license[^50]. Webex Go from Certified Calling Providers is applicable to 16 countries: the United States, United Kingdom, France, Austria, Belgium, Denmark, Germany, Italy, Ireland, Luxembourg, Mexico, Netherlands, Poland, Spain, Sweden, and Switzerland from February 25, 2025 onward[^1]. Features tied to AT&T Foundational Account Numbers, AT&T Cloud Voice with Webex, and the Control Hub AT&T User Guide apply to the United States[^16][^47][^13][^9][^12][^11].

## What remains uncertain

Webex Go Mobile Operator eligibility, including whether it is restricted to United States AT&T Business wireless CRU plan subscribers, is not covered by the sources below. Routing and location determination for emergency calls dialled directly on the Webex Go native line is not covered by the sources below. Whether a Webex Go number supports business SMS or MMS is not covered by the sources below. Current Webex Go pricing and whether no-extra-cost inclusion still holds are not covered by the sources below. Webex Go behaviour when roaming abroad and international dialling on the Go line are not covered by the sources below. The current supported handset list for Webex Go eSIM activation is not covered by the sources below. Using a Webex Go device as an agent endpoint in hunt groups and call queues is not covered by the sources below. The maximum number of single number reach numbers allowed per user and their associated API field names are not covered by the sources below.

## Sources

[^1]: The February 25, 2025 release note says Webex Go from Certified Calling Providers can be assigned to users in 16 countries: the United States, United Kingdom, France, Austria, Belgium, Denmark, Germany, Italy, Ireland, Luxembourg, Mexico, Netherlands, Poland, Spain, Sweden and Switzerland. Source: [What's new in Webex Calling](https://help.webex.com/en-us/article/rdmb0/What's-new-in-Webex-Calling), entry 'Webex Go is available from Certified Calling Providers' dated February 25, 2025. Checked 2026-09-25.
[^2]: If Control Hub shows 'Number activation pending' for a Webex Go number, Cisco says to check the status again after 2 hours. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Assign the mobile number to a user'. Checked 2026-09-25.
[^3]: To add Webex Go numbers in Control Hub, go to Services > PSTN & Routing > Numbers > Manage > Add, choose a location, choose 'Mobile Number' as the number type, then select the mobile operator. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Add mobile numbers'. Checked 2026-09-25.
[^4]: If a user wants to keep a published business number but cannot or will not port it to a Webex-certified provider, Cisco's alternate-identity approach assigns the published number as a secondary number. Calls to it then ring all of the user's devices, including the Webex Go device. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Provision Webex Go alternate identity'. Checked 2026-09-25.
[^5]: Under the alternate-identity approach, the External Calling Line Identity policy can make outgoing calls present the published secondary number as the caller ID. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Provision Webex Go alternate identity'. Checked 2026-09-25.
[^6]: As of the October 2024 activation article, the listed Android devices were Samsung Galaxy S20 FE 5G to S23 Ultra on One UI 5.1 or later, and Google Pixel 6 to 7 Pro on Android 13 or later. Source: [Activate Webex Go on your mobile phone](https://help.webex.com/en-us/article/qajdar/Activate-Webex-Go-on-Mobile-Phone), supported Android devices section. Checked 2026-09-25.
[^7]: When a call on the Webex Go number connects and the user is signed in to the Webex App on the same phone, they can manage the call in progress from the app. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Webex Go mobile app calling features'. Checked 2026-09-25.
[^8]: To assign a Webex Go number, the administrator opens the user's Calling tab, clicks Add Number under Directory Numbers (or Primary, to replace the primary number) and picks the number with the Webex mobile tag. The Webex Go device then appears on the user's Devices tab. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Assign the mobile number to a user'. Checked 2026-09-25.
[^9]: For AT&T Webex Go numbers, Control Hub shows the activation status as Pending, Successful or Error. Source: [Webex Go with AT&T](https://help.webex.com/article/nst9txu), activation status description. Checked 2026-09-25.
[^10]: The AT&T procedure lets administrators add up to 20 AT&T mobile numbers at once. Source: [Webex Go with AT&T](https://help.webex.com/article/nst9txu), provisioning procedure, add mobile numbers step. Checked 2026-09-25.
[^11]: AT&T markets Webex Go under AT&T Cloud Voice with Webex. It says business calls are made from the phone's native dialer and that BYOD works on compatible smartphones with eSIM or dual-SIM support. Source: [AT&T Cloud Voice with Webex](https://www.business.att.com/products/att-cloud-voice-with-webex.html), Webex Go section and supported capabilities list. Checked 2026-09-25.
[^12]: From December 17, 2025, Control Hub shows the AT&T User Guide on the Add Numbers screen for customers whose Webex Go numbers are provisioned through AT&T. Source: [What's new in Webex Calling](https://help.webex.com/en-us/article/rdmb0/What's-new-in-Webex-Calling), entry 'Webex Go AT&T User Guide and support link for AT&T representative in Control Hub' dated December 17, 2025. Checked 2026-09-25.
[^13]: Webex Go with AT&T supports only one AT&T Foundational Account Number (FAN) per Webex organization. Source: [Webex Go with AT&T](https://help.webex.com/article/nst9txu), AT&T requirements statement near top of article. Checked 2026-09-25.
[^14]: When adding AT&T Webex Go numbers, the administrator selects 'AT&T Wireless' as the mobile operator, enters and confirms the operator account ID (business account number), and uses 'Retry authorization' to validate it. Source: [Webex Go with AT&T](https://help.webex.com/article/nst9txu), provisioning procedure, operator selection step. Checked 2026-09-25.
[^15]: In October 2024, Cisco said Webex Go was available in the United States, United Kingdom and France, with expansion planned for other European and American markets. Source: [Webex Go Reimagined: Flexible, Secure, and Cost-Effective Mobile Calling Solution](https://blog.webex.com/collaboration/webex-go-reimagined-more-choice-flexibility-and-coverage-zero-cost/), availability paragraph. Checked 2026-09-25.
[^16]: Webex Go for business-supplied devices, starting with AT&T in the United States, makes the wireless number replace the user's fixed Webex Calling business number. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go for business-supplied devices'. Checked 2026-09-25.
[^17]: Cisco states that Webex Go BYOD calls have higher media quality than Webex App over-the-top VoIP calls on the personal data plan, because business calls go over the mobile voice network instead of data. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go for personal mobile phones'. Checked 2026-09-25.
[^18]: Webex Go for personal mobile phones (BYOD) adds the user's Webex Calling business number to their personal phone as a second line through an eSIM. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go for personal mobile phones'. Checked 2026-09-25.
[^19]: The Webex App mobile call widget gives in-call controls (Hold, Transfer, Video Meeting, Open Webex, End call) for calls over Webex Go, or over a mobile network operator that uses Cisco call control for signalling. Source: [Access call controls on mobile with the Webex App call widget](https://help.webex.com/article/93fjy7/Access-call-controls-on-mobile-with-the-Webex-App-call-widget), article body, scope and controls list. Checked 2026-09-25.
[^20]: For Webex Go, the Webex mobile app's Calling Mode setting should be set to 'My Mobile Operator', so calls go over the cellular voice network instead of VoIP over data. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Webex mobile app settings'. Checked 2026-09-25.
[^21]: Webex Go is bought from Webex-certified mobile calling providers, which administrators can find in the PSTN section of Control Hub. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go providers'. Checked 2026-09-25.
[^22]: A Webex Go mobile number must be added to the correct Webex Calling location of the intended subscriber, or it cannot be assigned properly. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Add mobile numbers'. Checked 2026-09-25.
[^23]: When all of a user's devices ring for an incoming call, declining on the Webex Go device lets the other devices keep ringing. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Receiving an inbound call'. Checked 2026-09-25.
[^24]: Cisco describes Webex Go as a mobility solution that offers a secure, compliant calling experience with flexible deployment and connectivity options. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Overview'. Checked 2026-09-25.
[^25]: To activate Webex Go, the phone must be carrier unlocked, dual-SIM capable and able to support an active eSIM profile. Source: [Activate Webex Go on your mobile phone](https://help.webex.com/en-us/article/qajdar/Activate-Webex-Go-on-Mobile-Phone), device requirements section. Checked 2026-09-25.
[^26]: In Control Hub, 'DND Override for mobile devices' is enabled by default, so Webex Go devices receive calls during DND and Quiet Hours unless an administrator disables it. Source: [Manage Do Not Disturb (DND) Override in Control Hub](https://help.webex.com/en-us/article/n2wfckr/Manage-Do-Not-Disturb-(DND)-Override-in-Control-Hub), default-setting statement in the article body. Checked 2026-09-25.
[^27]: The Webex Go user guide says that by default the Webex Go device overrides Do Not Disturb (DND) and still alerts, unless it is explicitly configured not to. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Webex Go DND override'. Checked 2026-09-25.
[^28]: The May 7, 2025 release note introducing DND override says Webex Go adheres to the user's DND policy settings for call notifications, and that enabling the override delivers calls to the Webex Go device. Read literally, this implies adherence without the override, which conflicts with the 'enabled by default' statements (disputed). Source: [What's new in Webex Calling](https://help.webex.com/en-us/article/rdmb0/What's-new-in-Webex-Calling), entry 'Override Do not Disturb(DND) for Webex Go' dated May 7, 2025. Checked 2026-09-25.
[^29]: DND Override applies only to Webex Go, in both Mobile Operator and BYOD deployments. It controls whether Webex Go devices alert when the user has set DND or Quiet Hours or is presenting. Source: [Manage Do Not Disturb (DND) Override in Control Hub](https://help.webex.com/en-us/article/n2wfckr/Manage-Do-Not-Disturb-(DND)-Override-in-Control-Hub), opening definition paragraph. Checked 2026-09-25.
[^30]: In the DvO 'Mobile voice network' mode, a call placed from the Webex mobile app first rings the user's own phone; once the user answers, the phone rings the person being called. Source: [Webex App | Make work calls over a mobile phone connection](https://help.webex.com/en-us/article/nh0pglcb/Webex-App-Make-work-calls-over-a-mobile-phone-connection), 'Mobile voice network' option description. Checked 2026-09-25.
[^31]: When an administrator has set a user up with Dial-via-Office (DvO), the Webex App offers three work-call modes: Voice over IP, Mobile voice network and Autoselect. Source: [Webex App | Make work calls over a mobile phone connection](https://help.webex.com/en-us/article/nh0pglcb/Webex-App-Make-work-calls-over-a-mobile-phone-connection), article body, call option list. Checked 2026-09-25.
[^32]: The Webex App on a mobile platform with a cellular connection does not use RedSky for emergency calls. The call goes through the native dialer over the cellular network, and the app shows a pop-up confirming a cellular emergency call was placed. Source: [Enhanced Emergency Calling for Webex Calling](https://help.webex.com/en-us/article/av6oo3/Enhanced-Emergency-Calling-for-Webex-Calling), section 'Location detection'. Checked 2026-09-25.
[^33]: In the Webex App supported-calling-options comparison, 'Emergency services location update' is supported on mobile only for tablets. Source: [Webex App | Supported calling options](https://help.webex.com/en-us/article/xga73p/Webex-App-%7C-Supported-calling-options), feature comparison table, row 'Emergency services location update', mobile column. Checked 2026-09-25.
[^34]: If the cellular emergency call fails, the pop-up offers to place the call through the Webex App over Wi-Fi, but those Wi-Fi calls do not give emergency services the caller's location as cellular calls do. Source: [Enhanced Emergency Calling for Webex Calling](https://help.webex.com/en-us/article/av6oo3/Enhanced-Emergency-Calling-for-Webex-Calling), section 'Location detection'. Checked 2026-09-25.
[^35]: Webex Go eSIM activation uses a QR code sent by email, and the codes can be used only once. Source: [Activate Webex Go on your mobile phone](https://help.webex.com/en-us/article/qajdar/Activate-Webex-Go-on-Mobile-Phone), activation steps section. Checked 2026-09-25.
[^36]: Webex Go mobile numbers are validated when added and stay inactive until they are assigned to users. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Add mobile numbers'. Checked 2026-09-25.
[^37]: As of the October 2024 activation article, Webex Go on iPhone required iOS 15.4 or later, and the listed models ran from iPhone XR through iPhone 14 Pro Max. Source: [Activate Webex Go on your mobile phone](https://help.webex.com/en-us/article/qajdar/Activate-Webex-Go-on-Mobile-Phone), supported iOS devices section. Checked 2026-09-25.
[^38]: Call blocking and filtering on the Android or iOS phone affects only calls to the Webex Go device; the user's other Webex devices still alert. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^39]: With Webex Go, device compatibility, mobility features such as VoWiFi, roaming, data, texting and usage plans, and some carrier-specific call features depend on the mobile provider. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^40]: For Webex Go compatibility, Cisco says to disable phone features that manipulate voice calls, including Apple iOS Live Voicemail and Hold Assist Detection. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^41]: If iOS Phone settings are configured to answer unknown callers and record their names, they interrupt Webex Calling announcements. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^42]: Network conditions can affect whether incoming-call alerts reach the Webex Go device. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^43]: After Webex Go is enabled, users of the Webex mobile companion app must sign out and back in, and must enable notifications for the Webex App. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Known limitations when using Webex Go'. Checked 2026-09-25.
[^44]: Webex Go calls are made from the phone's built-in Phone app. On a phone with multiple eSIMs, the user may need to pick the correct SIM for outbound Webex Go calls. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Making an outbound call'. Checked 2026-09-25.
[^45]: Webex Go users cannot change their caller ID from the Webex mobile app. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Change your CLID for subsequent calls'. Checked 2026-09-25.
[^46]: In October 2024, Cisco announced that Webex Go was included at no additional cost with the Webex Calling Professional license, replacing separate SKUs. Source: [Webex Go Reimagined: Flexible, Secure, and Cost-Effective Mobile Calling Solution](https://blog.webex.com/collaboration/webex-go-reimagined-more-choice-flexibility-and-coverage-zero-cost/), pricing paragraph. Checked 2026-09-25.
[^47]: For AT&T, a Webex Go prerequisite is a valid AT&T Foundational Account Number (FAN). Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Prerequisites for Webex Go'. Checked 2026-09-25.
[^48]: Webex Go requires a mobile plan, a phone number and a device or eSIM from a certified mobile calling provider. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Prerequisites for Webex Go'. Checked 2026-09-25.
[^49]: The provider must validate the mobile number and enable it for Webex before it can be provisioned in Webex Calling. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Prerequisites for Webex Go'. Checked 2026-09-25.
[^50]: Webex Go users need a Webex Calling Professional license. Source: [What's new in Webex Calling](https://help.webex.com/en-us/article/rdmb0/What's-new-in-Webex-Calling), entry 'Webex Go is available from Certified Calling Providers' dated February 25, 2025. Checked 2026-09-25.
[^51]: Webex connects directly with the mobile providers, and the provider connects to the Webex Calling platform to route business calls to activated devices. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go architecture'. Checked 2026-09-25.
[^52]: Administrators can find the supported Webex Go providers at admin.webex.com/calling/pstn/providers by filtering on the Webex Go service type. Source: [Provision Webex Go](https://help.webex.com/en-us/article/ns2be4t/Provision-Webex-Go), section 'Determine the provider'. Checked 2026-09-25.
[^53]: A user dials *11 on the Webex Go device to pull an active call from another of their devices onto the Webex Go device. Source: [Use Webex Go on your mobile phone](https://help.webex.com/en-us/article/ng0os0ab/Using-Webex-Go-on-Mobile), section 'Pull an active call to your Webex Go device'. Checked 2026-09-25.
[^54]: Architecturally, Webex Calling treats a Webex Go device as a SIP-registered device, which makes it one more endpoint for delivering the user's business calls. Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go architecture'. Checked 2026-09-25.
[^55]: Users can configure single number reach in User Hub only after the administrator has set it up for their location and enabled it for them. Source: [Configure single number reach (office anywhere) in User Hub](https://help.webex.com/en-us/article/doh96t/Configure-and-manage-single-number-reach-office-anywhere-in-the-calling-user-portal), prerequisites note. Checked 2026-09-25.
[^56]: When a user makes outgoing calls with single number reach, the caller ID setting of their Webex Calling primary number is used. Source: [Manage single number reach (office anywhere) in Control Hub](https://help.webex.com/en-us/article/hyv1fl/Configure-single-number-reach-(office-anywhere)), single number reach overview. Checked 2026-09-25.
[^57]: In Webex Calling, single number reach (office anywhere) makes calls to the user's work number also ring other phone numbers. Users can make, receive and move calls to or from any desk or mobile phone set up as a single number reach number. Source: [Manage single number reach (office anywhere) in Control Hub](https://help.webex.com/en-us/article/hyv1fl/Configure-single-number-reach-(office-anywhere)), opening overview paragraph. Checked 2026-09-25.
[^58]: Single number reach has two per-number incoming-call options. 'Do not forward calls' means calls are not forwarded even if call forwarding is on. 'Answer confirmation' makes the called party press a key before being connected. Source: [Configure single number reach (office anywhere) in User Hub](https://help.webex.com/en-us/article/doh96t/Configure-and-manage-single-number-reach-office-anywhere-in-the-calling-user-portal), single number reach section, incoming call options. Checked 2026-09-25.
[^59]: Single number reach rings an external mobile number through the PSTN, and the mobile carrier is not integrated with Webex Calling. Webex Go instead makes the mobile phone a SIP-registered Webex Calling endpoint through a certified provider. So Webex Go, unlike single number reach, supports device-level features such as *11 call pull and DND override on the mobile device (inferred). Source: [Get started with Webex Go](https://help.webex.com/en-us/article/nh492cfb/Get-Started-with-Webex-Go), section 'Webex Go architecture', compared with cisco-help-hyv1fl-snr-control-hub overview. Checked 2026-09-25.
[^60]: In the Webex App, a user can tap More > Switch to <number> during a call to move it to the phone's native Phone app. The administrator must enable this for the user's mobile number, and there is a short pause during the switch. Source: [Webex App | Switch your call to your mobile Phone app](https://help.webex.com/article/9mqjty/Webex-Switch-Your-Call-to-Your-Mobile-Phone-App), article body, steps 1-3 and following note. Checked 2026-09-25.