What action will resolve this issue?

An external Jabber device cannot register. While troubleshooting this issue, the engineer discovers that privately signed certificates are being used on Expressway-C and Expressway-E.

What action will resolve this issue?
A . The private CA certificate must be placed in the phone trust store
B . The Jabber client must register to the Cisco UCM internally before it will register externally
C . The device running the Jabber client must download and trust the private CA certificate
D . The device running the Jabber client must use a VPN to register

View Answer

Answer: C