We are facing a problem while we receive any PSTN call on IP phones.
At first time of call from PSTN , number displayed on IP phone is of PRI which is terminated on PSTN Gateway. Next time when we receive the call on same phone , number displayed is of Caller.
We are using CCM 5.x & DID facility is being used wherein user from PSTN can directly reach DID extn. assigned to IP phone.
Can somebody guide on same ?