Our client is migrating to Voice over IP from Panasonic PBXs with the help of Cisco CUCM and gateways ,we have panasonic phones and Cisco ipphones , I've connected Panasonic TDA600 to Cisco 3845 series through E1/PRI trunk with QSIG protocol and from CUCM point mgcp . the calls from Cisco Ipphones to Panasonic analog phones go well , but from Panasonic to Cisco it don't !
from debug ISDN q931 command i can see the digits coming from Panasonic but nothing happen !
if I change MGCP to H323 (dial-peers) everything goes well .
I wonder connecting Panasonic to Cisco with QSIG and MGCP is practical at all or not ?any experience ?