Configure Unified CM for Webex Calling

Publisher

Cisco Webex

URL

https://help.webex.com/en-us/article/nqqzbk7/Configure-Unified-CM-for-Webex-Calling

Published

2024-05-18

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco documentation; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• The Webex partition must be added to the calling search space used as the inbound CSS on Unified CM PSTN trunks so that PSTN calls to Webex Calling numbers can be routed. in context
• Cisco's 'Configure Unified CM for Webex Calling' article defines a Webex inbound CSS on Unified CM containing the DN, ESN, PSTNInternational and onNetRemote partitions. in context
• Cisco's configuration adds a Unified CM route pattern for each DID range hosted on Webex Calling, using the full +E.164 pattern with a leading backslash and pointing to the RL_Webex route list. in context
• Cisco's configuration gives the Unified CM SIP trunk to Webex (via the Local Gateway) an AAR CSS that reaches only PSTN reroute patterns (PSTNReroute). in context
• In the same Webex article, the Unified CM SIP trunk to and from Webex uses the Local Gateway CUBE's IP address as its destination, with destination port 5060. in context
• The Webex SIP Profile in Cisco's Unified CM for Webex Calling configuration has 'Enable OPTIONS Ping to monitor destination status for Trunks with Service Type None (Default)' checked. in context
• In Cisco's Unified CM configuration for Webex Calling, the dedicated security profile for the trunk to the Local Gateway has Incoming Port 5065, to match the port the LGW uses for Webex traffic. in context
• The article's Unified CM for Webex Calling sequence begins with the SIP trunk security profile, then the SIP profile, then a calling search space for calls from Webex, and only then the SIP trunk. Route group, route list, partition, route patterns and abbreviated intersite dialing normalization follow. in context
• In the same article, the Webex SIP trunk uses the Webex security profile and SIP profile, has Run On All Active Unified CM Nodes checked, and uses an AAR calling search space (PSTNReroute) that can reach only PSTN route patterns. in context
• Cisco's example calling search space for calls arriving from Webex includes partitions for +E.164 directory numbers (DN), abbreviated inter-site dialing (ESN) and PSTN access (PSTNInternational). in context
• Cisco's Unified CM configuration adds abbreviated inter-site dialing normalization for Webex destinations, translating enterprise numbers to +E.164 before routing to the Webex partition. in context
• In Cisco's Unified CM configuration for Webex Calling, the SIP trunk to the Local Gateway uses port 5065 so Webex-bound traffic can be told apart from PSTN traffic (port 5060) to the same device. in context
• When the Local Gateway and the PSTN gateway are on the same device, Unified CM needs two trunks to it, using different SIP listening ports, so it can tell calls from Webex from calls from the PSTN and give each a different class of service. in context
• Cisco's Unified CM configuration gives calls from Webex a calling search space containing the DN (+E.164 directory numbers), ESN (abbreviated inter-site dialing), PSTNInternational and onNetRemote partitions. in context
• On Unified CM, Cisco configures full +E.164 route patterns for the DID ranges in Webex, pointing to a Webex route list whose route group contains the SIP trunk to the Local Gateway. in context
• The Unified CM partition holding Webex destinations must be added to every calling search space that needs to reach Webex, including the calling search space of the inbound PSTN trunk. in context

Cite this source record

APA

WarmTransfer. (2024, May 18). Configure Unified CM for Webex Calling. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-help-nqqzbk7-configure-ucm-for-wxc

BibTeX

@misc{warmtransfer-cisco-help-nqqzbk7-configure-ucm-for-wxc,
  title  = {Configure Unified CM for Webex Calling},
  author = {{WarmTransfer}},
  year   = {2024},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-help-nqqzbk7-configure-ucm-for-wxc},
  note   = {Cisco Webex, accessed 2026-09-24}
}