Cisco Cisco TelePresence Management Suite (TMS) Version 15
Configuring PSTN Calls to Pass Through a PSTN Gateway to
WebEx
WebEx
WebEx always provides a fully qualified E.164 number beginning with the international escape character (+).
For example: +14085551212. VCS and/or Unified CM call routing must be properly configured to ensure
PSTN calls are routed correctly.
Two deployments models are supported for routing PSTN calls to pass through a PSTN gateway to WebEx:
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Configuring PSTN Calls to Pass through a PSTN Gateway Registered to
Cisco VCS
Cisco VCS
To configure PSTN calls to pass through a PSTN Gateway registered to VCS, do the following:
On VCS, create a transform or search rule that transforms the globally routable number provided by WebEx
(example: +14085551212) to a number with the tech-prefix of the gateway registered to VCS (example:
9#14085551212).
This example transforms +14085551212@example.webex.com to
9#14085551212@example.webex.com
using the Regex pattern type:
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Pattern string: \+(\d+@.*)
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Replace string: 9#\1
For more information about configuring traversal zones, search rules and transforms in VCS, refer to Cisco
TelePresence Video Communication Server Basic Configuration (Control with Expressway) Deployment
Guide:
Cisco Collaboration Meeting Rooms (CMR) Hybrid Configuration Guide (TMS 14.6 - WebEx WBS29.11)
Page 189 of 254
Configuring Audio
Configuring PSTN Audio for CMR Hybrid