we are facing an issue that phones are not registering to CUCM sub ,Subscriber is newly installed and the replication is good.however CIPC , CUP and VG are able to register with Sub . Any help willl be higly appreciated.
Are the CUCM groups configured to do so???
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You mentioned CIPC, CUP and Voice gateway. I beilieve that your CIPC and CUP because they are pc applications will most likely be sitting on the data vlan. Can the vlans where your phones are on talk to the subscriber vlan? Are the phones reachable from the subscriber
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If your phones are not configured to have DNS servers, and the CUCM entry is a hostname, the phones will fail to resolve the names of the CUCM servers and register to the TFTP address which is an IP address. It is likely your CIPC and CUP work because all your PCs have DNS servers, and possibly even the voice gateway or the voice gateway is pointed to CUCM using an IP address.
Thanks to all ... Actually the problem was in ASA firewall they did not set the priority which was creating issue.
Thankseveryone for their tips...:)