Cisco Cisco Expressway
MRA users.
IM and Presence Service configuration is not required if you're deploying the hybrid model, as these services are
provided by the WebEx cloud.
provided by the WebEx cloud.
Note:
The connections configured in this procedure are static. You must refresh the configuration on the
Expressway-C after you reconfigure or upgrade any of the discovered Unified Communications nodes. For more
details, see
details, see
Go to Configuration > Unified Communications > <UC server type> and click Refresh servers.
Trust the Certificates Presented to the Expressway-C
If TLS verify mode is On when discovering Unified Communications services, then you must configure the
Expressway-C to trust the certificates presented by the IM and Presence Service nodes and Unified CM servers.
Expressway-C to trust the certificates presented by the IM and Presence Service nodes and Unified CM servers.
1.
Determine the relevant CA certificates to upload:
—
If the servers' tomcat and CallManager certificates are CA-signed, the Expressway-C's trusted CA list must
include the root CA of the certificate issuer.
include the root CA of the certificate issuer.
—
If the servers are using self-signed certificates, the Expressway-C's trusted CA list must include the self-
signed certificates from all discovered IM and Presence Service nodes, Cisco Unity Connection servers,
and Unified CM servers.
signed certificates from all discovered IM and Presence Service nodes, Cisco Unity Connection servers,
and Unified CM servers.
2.
Upload the required certificates to the Expressway-C (Maintenance > Security certificates > Trusted CA
certificate).
certificate).
3.
Restart the Expressway-C (Maintenance > Restart options).
Discover Unified CM Servers
1.
On Expressway-C, go to Configuration > Unified Communications > Unified CM servers.
The page lists any Unified CM nodes that have already been discovered.
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Mobile and Remote Access Through Cisco Expressway Deployment Guide
Configuring Mobile and Remote Access on Expressway