I recently subscribe for an ISDN and terminate it on a Cisco 3825 router. I used it as a sip trunk for my asterisk. i’m a newbie when it comes to ISDN. and i’ve been experiencing some issues:
1. Call Hangup:
When hangup is initiated from the outside the extension (softphone/ip phone/VoIP Phone) does not hangup, is this normal? shouldn’t asterisk hangup the extension as well when it receives the hangup properly from ISDN? or maybe it’s because asterisk does not detect the proper hangup?
2. Caller-ID for incoming calls:
When i call in to the ISDN using my hand phone there are times that my handphone number shows up on the extension but there are times it does not, what it shows is the main isdn number i subscribed to.
I called using my mobile (33232333) to 82301000 on the extension i see the correct caller-id 82301510 which is wrong (this number is the main line for my isdn)
Can anyone please advice ow do i start troubleshooting this issues?