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When programming on my vg224 to allow for a dns pointer for SIP to my cucm cluster (allowing for redundancy) I typically use:
router(config)# ip host _sip._tcp.cucm.clusterDomain.org srv etc....
I typically add all my subscriber cucms this way to al...
If enabling the EHS does not solve your issue be sure that the APC-43 is connected to your device in both the headset and the aux ports. If it is not the EHS will not function properly.
1) assuming you have a PBX in place set forwards for the directory number via the configuration web service of the pbx. If using Call Manager Express you can configure from the CLI using the following document information for SCCP or SIP. SCCP config...
1) configure the forward on the Directory number from CUCM is probably the easiest way. 2) Assuming each analog is a different external number that both need to point at internal number "100". Set up a connection plar on the fxo port to forward the c...