Phone A calls phone B, which is registered to Cisco CallManager Express and forwards calls to a Cisco Unity Express. If the Cisco Unity Express is unavailable or is in the registering state, phone A does not hear a ringback tone or a busy tone.
Phone A does not hear a ringback tone because it is still in the call transfer process to the Cisco Unity Express voicemail. Since the Cisco Unity Express is unavailable, it retries the transfer six times by default.
The sip-ua command can be configured in the Cisco CallManager Express in order to reduce the number of retries.
Hi!I have a Cisaco router 2821+CME with 9 port swith ethernet module.How can I connect voip phones to my router through ethernet switch module inside router.I tried address interface vlan - without results. Help me please.
In our enterprise, the network topology is hierarchic: (see in the old architecture image attached) It uses static routingThe PC B can ping to PC 2The PC A can ping to PC 1All traffic routed to the head office only Any traffic routed to ...
The following is the message I get when the post install / installing db components are at about 83% complete. I have rebuilt the server as multiple TAC cases have revealed that my CUCM server is possibly corrupted. This is the exact same thing that happe...