Control Hub

  • If you update the first and last name field for a user in Control Hub, through a CSV or API, and the first name or last name are left blank, then the name saves in Control Hub. However, the name appears in the Cisco IP phones with a period (".") in the first name and the last name fields.

  • You can't filter by locations for users, workspaces, or devices in Control Hub.

  • Email languages are localized based on the language setting set through Control Hub. However, when an end user receives an activation email, the activation link that opens the, opens the settings page in English, regardless of the language of the email.

    Workaround: The end user can set the appropriate language in after sign-in.

  • The device status search by location isn’t available.

    Workaround: Create tags for devices based on location. Then search by tag using the search bar on the Devices page. For more information about creating tags for devices, see Group Devices with Tags.

  • When you update a user's first name or last name in Control Hub, the update isn't made in the corresponding Caller ID fields.

    Workaround: Change the user's name in Control Hub and then update the Caller ID First Name and Last Name in Control Hub.

  • When you create a location and assign a number that's already in use, the location still gets created but shows as unconfigured in Control Hub.

  • You can enter special characters in the First Name and Last Name fields for the Caller ID feature in Control Hub but those characters are normalized and removed from the phone display screen when that user makes a call.

  • Don’t use zero as the access code for Webex Calling. Zero overlaps with national and international dialing prefixes. Calls made with the Webex Calling application or Webex Calling devices fail, if zero is used as the access code.

  • If you add a workspace and don’t add a Webex Room Device, then the option to add a desk phone doesn’t appear.

    Workaround: Recreate the workspace and associate the desk phone device.

Emergency Callback Number

  • In Control Hub, you can deactivate a user or workspace. However, the deactivation feature isn’t currently functioning. When deactivating a user or workspace, if the user or workspace is actively used as the Emergency Callback Number (ECBN), a message appears to warn the administrator. Currently, you can ignore this warning since the deactivation doesn’t actually occur.

  • When the Assigned Number from User’s Location is selected, the Emergency Callback Number (ECBN) selects a fallback destination. The displayed name and number in the drop-down is the effective user. It is not the originally configured user. This limitation is cosmetic, but misleading, and will be resolved.

Bulk delete phone numbers

If attempting to delete the bulk range of numbers, Control Hub prompts to delete the entire range if only one record of that range is selected. If more than one number in that range is selected, then the bulk delete of this number range fails.

Webex Calling analytics

  • Analog telephone adapters (ATAs) and DECT devices aren’t supported.

  • Devices that register through IPv6 or a VPN termination to Webex Calling are also unsupported.

Business Texting

  • Few numbers may not have texting capability (carrier limitation), so customer must contact TAC to investigate it further.

  • All the pending port orders before General Availability for business texting won’t have automatic texting capability when port completes. Contact TAC, if you have issues. The backend team can run an audit script for each customer to fix the issue.

  • For outgoing messages, there's a limitation of six messages per minute from each number. If delivery of the messages is delayed, it can be one of the cause for slowness.

  • Bulk Provision for business texting is not working accurately. To enable bulk provisioning, you must provision business texting at the user or organization level.

Calling User Portal

  • When Don’t Disturb is enabled from the Calling User Portal, callers hear the busy treatment. Currently, in the portal, the description says that it sends callers to voicemail, when enabled. To send callers to voicemail, When busy must also be enabled in the Voicemail Settings of the Calling User Portal.

Local Gateway configuration

  • The Fax-to-Email feature in Webex Calling requires the T.38 protocol when used through the local gateway (CUBE) for instance FAX to Personal Fax number > PSTN > CUBE > Webex Calling SBC > EMAIL. In this case, the media transmission won't be encrypted. Therefore, enable the T.38 protocol at your own discretion.

Webex Calling devices

  • Busy Lamp Field (BLF) doesn't display in secondary devices (shared call appearance). Currently, BLF is only showing for primary devices.

  • When deactivating a user, Calling services are unavailable for the Webex App. Cisco MPP phones continue to support Calling until the device is removed or call intercept is enabled for that user. For more information about the call intercept, see Configure Call Intercept for a User for Webex Calling in Cisco Control Hub.

  • ATA 191/192 - When attempting a remote firmware upgrade, as part of the on board process, for Cisco ATA 191/192 devices, you may experience a problem if the firmware load on the ATA is an older version. To resolve the issue, follow the instructions to manually upgrade the firmware on your Cisco ATA 191/192.

    Workaround: Go to Administration > Firmware Upgrade. Unzip the file. Select the unzipped file to upgrade it. The firmware is downloaded from here. After the firmware is downloaded, point the ATA back to

  • Your MPP device can’t access any Active Directory (AD) that was synchronized by Cisco Directory Connector. From the Custom Directory menu, your MPP phone can only access users that were assigned Webex Calling licenses.

  • When applying an MPP Line Key Template to a phone, there is a known issue where Virtual Lines assigned to the device may not appear after Apply Changes even though the template includes several Configure Lines positions on line keys. However, switching the phone back to Default Layout mode results in the Virtual Lines being applied as expected.

Webex Carrier users

Currently, Webex Calling and Webex Carrier share a common identity across systems that doesn't allow provisioning the same user in both environments. Any Webex Calling customer with an email address identifier for Webex Carrier can't on board to Webex Calling with the same email address identifier.