Troubleshooting DECT handsets on Webex Calling

See also

Sources

1. 1
   A Webex Calling DECT network can instead use auto-generated access codes, giving each registered handset its own unique pairing PIN.

   Build and manage digital DECT network in Control Hub · Create a New DECT Network (access code options) · Checked 2026-10-02
2. 2
   A Webex Calling DECT network can use a default access code, where every registered handset uses the same pairing PIN.

   Build and manage digital DECT network in Control Hub · Create a New DECT Network (access code options) · Checked 2026-10-02
3. 3
   The DECT access code is used both for a handset joining the network for the first time and for rejoining a disconnected handset.

   Build and manage digital DECT network in Control Hub · Create a New DECT Network (access code description) · Checked 2026-10-02
4. 4
   Base stations are added to a Webex Calling DECT network by MAC address, up to five at a time, comma-separated.

   Build and manage digital DECT network in Control Hub · Create a New DECT Network (add base stations step) · Checked 2026-10-02
5. 5
   If a handset displays 'Can't locate a base station', check that the base station is working and move the handset closer; the network may need an additional multicell base.

   Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Handset Installation Problems > Handset Won't Register (automatic configuration) · Checked 2026-10-02
6. 6
   Cisco DECT handsets supported on Webex Calling are the IP DECT 6823, 6825 and 6825 Ruggedized.

   Supported devices for Webex Calling · Cisco devices > Cisco IP DECT 6800 Series with Multiplatform Firmware · Checked 2026-10-02
7. 7
   A March 2026 maintenance standardised Cisco DECT base codec priority to G.711u, then G.711a, then G.729a; customers can change codec preferences in Control Hub.

   Announcements for the Webex Calling Devices · Webex Calling Cisco DECT maintenance - codec order (announced February 25, 2026) · Checked 2026-10-02
8. 8
   Control Hub shows DECT device status as online, offline or unavailable under Management > Devices, and device details show handset registration status per base.

   Build and manage digital DECT network in Control Hub · Status and device details sections · Checked 2026-10-02
9. 9
   The Cisco DBS-110 data sheet lists up to 30 SIP registrations and up to 10 concurrent calls in single-cell mode, with up to 6 repeaters.

   Cisco IP DECT 6800 Series Data Sheet · Table 2 (DBS-110 single-cell column) · Checked 2026-10-02
10. 10
    The Cisco data sheet lists a dual-cell mode for the DBS-110 (two bases, up to 20 concurrent calls, up to 12 repeaters).

    Cisco IP DECT 6800 Series Data Sheet · Table 2 (DBS-110 dual-cell column) · Checked 2026-10-02
11. 11
    DBS-110 dual-cell appears to be a hardware/firmware capability that Webex Calling does not offer, so a customer wanting two DBS-110 cells on Webex Calling should be steered to DBS-210 rather than troubleshooting dual-cell sync.inferred

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (DBS 110 description), read against the data sheet Table 2 · Checked 2026-10-02
12. 12
    Cisco documents firmware version 480Bx as the prerequisite for configuring a DBS-110 base on Webex Calling.

    Build and manage digital DECT network in Control Hub · Configure Cisco DECT DBS210/110 with Webex Calling · Checked 2026-10-02
13. 13
    On Webex Calling the Cisco IP DECT DBS-110 supports single-cell deployments only, with repeaters.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (DBS 110 description) · Checked 2026-10-02
14. 14
    Cisco documents that a DBS-210 base must be on firmware version 480 before it is configured on Webex Calling.

    Build and manage digital DECT network in Control Hub · Configure Cisco DECT DBS210/110 with Webex Calling · Checked 2026-10-02
15. 15
    The data sheet lists a DBS-210 multicell system of up to 254 bases at up to 1000 SIP registrations, up to 2000 concurrent calls and up to 100 repeaters.

    Cisco IP DECT 6800 Series Data Sheet · Table 2 (DBS-210 multi-cell column) · Checked 2026-10-02
16. 16
    The data sheet lists a DBS-210 in single-cell mode at up to 30 SIP registrations, up to 10 concurrent calls and up to 3 repeaters.

    Cisco IP DECT 6800 Series Data Sheet · Table 2 (DBS-210 single-cell column) · Checked 2026-10-02
17. 17
    On Webex Calling the Cisco IP DECT DBS-210 supports single-cell, dual-cell and multi-cell deployments with repeaters.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (DBS 210 description) · Checked 2026-10-02
18. 18
    The Multi Cell page DECT Property column shows a base's sync role as Primary, Locked, Searching, Free Running, Unknown, Assisted lock or Sync. Lost.

    Cisco IP DECT 6800 Series Administration Guide - Monitoring · Multi Cell web page field descriptions (DECT Property) · Checked 2026-10-02
19. 19
    Deleting the first provisioned handset in a Webex Calling DECT network causes all other handsets to change to an unregistered state.

    Build and manage digital DECT network in Control Hub · Manage Handsets · Checked 2026-10-02
20. 20
    When every handset in a Webex Calling DECT network goes unregistered at once after an admin change, a recent deletion of the first provisioned handset is a documented cause worth checking before treating it as a base or network outage.inferred

    Build and manage digital DECT network in Control Hub · Manage Handsets · Checked 2026-10-02
21. 21
    Cisco DBS-210/DBS-110 bases must be factory reset before being configured for Webex Calling.

    Build and manage digital DECT network in Control Hub · Configure Cisco DECT DBS210/110 with Webex Calling (prerequisites) · Checked 2026-10-02
22. 22
    From firmware release 4.8, a multicell system can be configured automatically without a primary base station.

    Cisco IP DECT 6800 Series Administration Guide - Phone Administration · Multicell setup section · Checked 2026-10-02
23. 23
    Before the DBS-110/210 firmware 5.1.2 upgrade (from November 2024), Cisco required Voice VLAN to be disabled on switch ports connected to Cisco DECT bases so bases did not join the voice VLAN unintentionally.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 firmware upgrade to 5.1.2 (announced October 25, 2024) · Checked 2026-10-02
24. 24
    Before the DBS-110/210 firmware 5.1.3SR1 maintenance window (May 2026), Cisco told customers to disable 802.1X on all switch ports connected to Cisco DECT bases, re-enabling it only after the upgrade.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 firmware upgrade to 5.1.3SR1 (announced May 7, 2026) · Checked 2026-10-02
25. 25
    If a handset displays Deregistered, the guide says to click Refresh on the base Extensions page, reconnect the handset if prompted, and escalate to the service provider if unresolved.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Handset Installation Problems > Handset Can't Register · Checked 2026-10-02
26. 26
    A DECT handset must be placed on its charging station to receive a firmware update.

    Cisco IP DECT 6800 Series Administration Guide - Phone Administration · Handset firmware update section · Checked 2026-10-02
27. 27
    A handset is paired to the base from the handset via Menu > Connectivity > Register, selecting an empty row and entering the access code in the AC field.

    Build and manage digital DECT network in Control Hub · Pair Your Handset to the Base Station · Checked 2026-10-02
28. 28
    A handset showing Searching is too far from a base or the base is inactive; wait for any base reboot, confirm the base has power and a green LED, and for lasting coverage gaps add a repeater or base.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Operational Problems with Handset > Handset Screen Displays Searching · Checked 2026-10-02
29. 29
    In a Webex Calling DECT network a handset can have at most two lines.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network · Checked 2026-10-02
30. 30
    A flashing red base LED with handsets showing No SIP Reg means the base cannot communicate with the call control system.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Operational Problems with Base Station > Base Station LED Flashes Red and Handset Displays No SIP Reg Message · Checked 2026-10-02
31. 31
    A Cisco IP DECT base station LED that stays solid red and never turns green means the base cannot get an IP address; check the Ethernet cable, switch port and DHCP server.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Base Station Installation Problems > Base Station LED is Solid Red · Checked 2026-10-02
32. 32
    Multicast must be configured on the local network so DECT bases can sync with each other; Cisco states that omitting it causes performance issues in the DECT network.

    Build and manage digital DECT network in Control Hub · Deploy Your Base Stations · Checked 2026-10-02
33. 33
    Webex Calling provides multicell support for the Cisco IP DECT DBS-210, allowing up to 1000 lines across up to 254 bases in a DECT network.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (multicell support paragraph) · Checked 2026-10-02
34. 34
    Multicell debug logging is enabled on the base Multi Cell page by setting Multi cell debug to Both, and should be set back to Disabled after troubleshooting.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Turn on Multicell Debug Logs · Checked 2026-10-02
35. 35
    A dual-cell or multicell DECT system must use a network time server.

    Cisco IP DECT 6800 Series Administration Guide - Phone Administration · Dualcell / multicell setup sections · Checked 2026-10-02
36. 36
    All base stations in a multicell system must be on the same factory-configured RF band to communicate; compare the RF Band field on each base.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Multicell Troubleshooting > Base Station Shows Searching in DECT Property (solution) · Checked 2026-10-02
37. 37
    When the Multi Cell page shows Searching! in the DECT property column, the bases cannot communicate; move the base closer (about -75 dBm signal recommended) or add a base in between, and check for interference.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Multicell Troubleshooting > Base Station Shows Searching in DECT Property · Checked 2026-10-02
38. 38
    Cisco says DECT bases pick up configuration changes automatically during the nightly resync.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 firmware upgrade to 5.1.3SR1 · Checked 2026-10-02
39. 39
    For no audio with multiple handsets on a single-base system, the guide says to verify that Use Different SIP Ports is Enabled under Network Settings.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Operational Problems with Handset > No Audio on Single Base Station System · Checked 2026-10-02
40. 40
    DBS-110 and DBS-210 base stations cannot be mixed within one Webex Calling DECT network.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (base type selection) · Checked 2026-10-02
41. 41
    Base station PCAP logs are held in RAM and are lost if the base loses power or resets before they are downloaded.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Generate PCAP Logs (note) · Checked 2026-10-02
42. 42
    A Cisco DECT base still below firmware 5.1.3 after October 2026 is likely to be left off the new SBCs and so lack the new Control Hub status and troubleshooting views; check its firmware first when those views are missing.inferred

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 bases SBC migration · Checked 2026-10-02
43. 43
    Cisco DECT base stations on Webex Calling can generate PRT logs that admins request and view in Control Hub.

    What's new in Webex Calling · June 30, 2025 entry · Checked 2026-10-02
44. 44
    A repeater with a red LED that fails registration is not in registration mode; reset it by unplugging for 30 seconds or holding its reset button for 5 seconds.

    Cisco IP DECT 6800 Series Administration Guide - Troubleshooting · Repeater Installation Problems > Can't Set Up a Repeater - LED is Red · Checked 2026-10-02
45. 45
    Cisco says a repeater extends base station range by up to 984 feet outdoors or 164 feet indoors.

    Get started with your new Cisco IP DECT 6800 series · Repeater setup section · Checked 2026-10-02
46. 46
    After a repeater is powered on, its registration to the base needs to happen within 5 minutes.

    Cisco IP DECT 6800 Series Administration Guide - Phone Administration · Repeater setup section · Checked 2026-10-02
47. 47
    To factory reset a DBS-210/DBS-110, hold the reset button on the bottom edge of the base for about 10 seconds and release when the LED turns red.

    Build and manage digital DECT network in Control Hub · Manually reconfigure Cisco DECT DBS210/DBS110 for Webex Calling · Checked 2026-10-02
48. 48
    Cisco IP DECT 6800 hardware ships in regional RF variants: 1880-1900 MHz (EU, APAC, AU/NZ) and 1920-1930 MHz (US and Canada).

    Cisco IP DECT 6800 Series Data Sheet · Specifications table (frequency band) · Checked 2026-10-02
49. 49
    Cisco announced that Cisco DBS-110/DBS-210 bases move to different SBCs in maintenance windows from mid to late October 2026, and only bases already on firmware 5.1.3 are included.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 bases SBC migration (announced September 30, 2026) · Checked 2026-10-02
50. 50
    Cisco says the DECT SBC migration is what enables device status, analytics and troubleshooting for Cisco DECT devices in Control Hub.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 bases SBC migration · Checked 2026-10-02
51. 51
    For the DECT SBC migration Cisco asks admins to verify their bases are on firmware 5.1.3 and to reboot devices manually if needed; devices otherwise migrate automatically in the window.

    Announcements for the Webex Calling Devices · Cisco DECT DBS-110/210 bases SBC migration (action required) · Checked 2026-10-02
52. 52
    Control Hub lets an administrator add a second handset to a DECT line, after which the line can be switched between the two handsets.

    Build and manage digital DECT network in Control Hub · Manage Handsets · Checked 2026-10-02
53. 53
    The Control Hub DECT Network page has a support card that generates a serviceability password giving read and write access to all Cisco DECT base stations in that DECT network.

    What's new in Webex Calling · January 22, 2025 entry (DECT serviceability password) · Checked 2026-10-02
54. 54
    When assigning a shared line to a DECT handset, Control Hub allows numbers from a different Webex Calling location than the device's location.

    Build and manage digital DECT network in Control Hub · Create a New DECT Network (assign users/workspace step) · Checked 2026-10-02
55. 55
    The base Home/Status page shows each extension's SIP identity status as OK or SIP Error.

    Cisco IP DECT 6800 Series Administration Guide - Monitoring · Home/Status web page fields · Checked 2026-10-02
56. 56
    The base Extensions page reports handset Terminal State as Present@RPNxx (connected), Detached, Located (configured but unreachable) or Removed (out of range for about an hour).

    Cisco IP DECT 6800 Series Administration Guide - Monitoring · Extensions web page field descriptions (Terminal State) · Checked 2026-10-02
57. 57
    After a DECT firmware rollout, a base that goes offline or shows a solid red LED should be checked against the switch port's voice VLAN and 802.1X settings, since Cisco tied both to its 5.1.x upgrades.inferred

    Announcements for the Webex Calling Devices · 5.1.2 and 5.1.3SR1 upgrade announcements, read with the 6800 troubleshooting chapter LED solid red entry · Checked 2026-10-02
58. 58
    Webex Calling supports Yealink W52B, W60B and W70B DECT bases as Cisco-managed third-party devices, listed in Control Hub as W52P, W56P, W60P or W70P.

    Supported devices for Webex Calling · Cisco-managed third-party devices > Yealink DECT and Handset · Checked 2026-10-02
59. 59
    From 31 January 2025 Control Hub no longer lets admins provision new Yealink W56P DECT bases; existing ones keep working until the 30 September 2027 end-of-life date.

    Announcements for the Webex Calling Devices · Yealink W56P end of support (announced November 4, 2024) · Checked 2026-10-02

Documents

Cite this page

WarmTransfer. (2026, October 2). Troubleshooting DECT handsets on Webex Calling. WarmTransfer. https://warmtransfer.net/knowledge/webex-calling-dect-troubleshooting

@misc{warmtransfer-webex-calling-dect-troubleshooting,
  title  = {Troubleshooting DECT handsets on Webex Calling},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/webex-calling-dect-troubleshooting},
  note   = {Verified 2026-10-02}
}