Cisco Cisco Expressway
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Note:
the following SRV records may be queried by the lookup tool or the client, but they are not required. You can
ignore name errors related to these:
■
_cisco-phone-tftp._tcp
■
_cisco-phone-http._tcp
■
_cuplogin._tcp
Checking Reachability of the Expressway-E
Ensure that the FQDN of the Expressway-E is resolvable in public DNS.
The FQDN is configured at System > DNS and is built as <System host name>.<Domain name>.
Checking Call Status
Call status information can be displayed for both current and completed calls:
■
Current calls: the Call status page (Status > Calls > Calls) lists all the calls currently passing through the
Expressway.
Expressway.
■
Completed calls: the Call history page (Status > Calls > History) lists all the calls that are no longer active.
The list is limited to the most recent 500 calls, and only includes calls that have taken place since the
Expressway was last restarted.
The list is limited to the most recent 500 calls, and only includes calls that have taken place since the
Expressway was last restarted.
If the Expressway is part of a cluster, all calls that apply to any peer in the cluster are shown, although the list is
limited to the most recent 500 calls per peer.
limited to the most recent 500 calls per peer.
Mobile and remote access calls have different component characteristics depending on whether the call is being
viewed on the Expressway-C or Expressway-E:
viewed on the Expressway-C or Expressway-E:
■
On an Expressway-C, a Unified CM remote session will have 3 components (as it uses the B2BUA to enforce
media encryption). One of the Expressway components will route the call through one of the automatically
generated neighbor zones (with a name prefixed by either CEtcp or CEtls) between Expressway and Unified
CM.
media encryption). One of the Expressway components will route the call through one of the automatically
generated neighbor zones (with a name prefixed by either CEtcp or CEtls) between Expressway and Unified
CM.
■
On an Expressway-E, there will be one component and that will route the call through the
CollaborationEdgeZone.
CollaborationEdgeZone.
Note that if both endpoints are outside of the enterprise (i.e. off premises), you will see this treated as 2 separate
calls.
calls.
Rich media sessions
If your system has a rich media session key installed and thus has been extended to support business-to-business
calls, and interworked or gatewayed calls to third-party solutions and so on, those calls are also listed on the call
status and call history pages.
calls, and interworked or gatewayed calls to third-party solutions and so on, those calls are also listed on the call
status and call history pages.
Checking Devices Registered to Unified CM via Expressway
Identifying devices in Unified CM
To identify devices registered to Unified CM via Expressway:
1.
In Unified CM, go to Device > Phone and click Find.
2.
Check the IP Address column. Devices that are registered via Expressway will display an IP Address of the
Expressway-C it is registered through.
Expressway-C it is registered through.
Identifying provisioned sessions in Expressway-C
To identify sessions that have been provisioned via Expressway-C:
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Mobile and Remote Access Through Cisco Expressway Deployment Guide
Appendix 1: Troubleshooting