i am trying to place a call from the PSTN network to the call manager via the voice gateway. iam using a ISDN PRI line which is terminated on the gateway. the gateway has sip dialpeers pointing to the call manager. Iam able to establish the call successfully but when the caller disconnects the call first i get a disconnect tone from the IP PHONE and the the IP PHONE says as it is connected.it come back to normal state after 30 secs.
the same secenario was tried with h323 protocol and it works fine for me as expected.
any help i would be gratefull.