Recently upgraded call manager from version 6.x to 8.5.1 and phone proxy worked fine before but on new version, the phones work but dialing is delayed and entering voice mail passwords is delayed. So seems signally related items are delayed, the rtp audio stream is fine however once call is established.
Here is some info and snippets from the config, anyone seen this?
ASA version 8.4(1)
CUCM version 184.108.40.20600-26 7941 phones - firmware SCCP41.9-1-1SR1S
172.16.1.20 - cucm pub 172.16.1.21 - cucm sub
tftp running on both servers
12.x.x.108 - PUBLIC IP NAT for CUCM PUB 12.x.x.12 -- ASA outside IP