If deb isdn q931 isn’t showing any incoming calls from outside, you’ll need to coordinate with the ITSP, as this is an issue on their end. There’s nothing we can do about it from our side.
Could you share the complete output of debug isdn q931 and debug ccapi inout?
Providing just one piece of the puzzle isn’t enough to fully analyze the issue
How many channels have been subscribed with the ITSP? I’ve seen ITSP's typically provide either 10, 20, or 30 channels, but your configuration shows 15 channels (pri-group timeslots 1-16). Are you sure this matches your subscription?
The following ISDN debugs are enabled on all DSLs:
debug isdn error is ON.
debug isdn q931 is ON. (filter is OFF)
CCAPI:
debug voip ccapi inout is ON (filter is OFF)Apr 9 15:31:46.055: ISDN Se0/3/0:15 Q931: RX <- SETUP pd = 8 callref = 0x01
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98392
Exclusive, Channel 18
Progress Ind i = 0x8281 - Call not end-to-end ISDN, may have in-band info
Calling Party Number i = 0x2181, '972557707607'
Plan:ISDN, Type:National
Called Party Number i = 0xC1, '21210'
Plan:ISDN, Type:Subscriber(local)
Apr 9 15:31:56.055: ISDN Se0/3/0:15 Q931: RX <- SETUP pd = 8 callref = 0x01
Sending Complete
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98392
Exclusive, Channel 18
Progress Ind i = 0x8281 - Call not end-to-end ISDN, may have in-band info
Calling Party Number i = 0x2181, '972557707607'
Plan:ISDN, Type:National
Called Party Number i = 0xC1, '21210'
Plan:ISDN, Type:Subscriber(local)
Is this what you see with an inbound call landing on the gateway? I see the PSTN calling number and internal called number, Which means the call is landing on the gateway.
I see calls landing on Exclusive Channel 18 , but you only have 15 channels configured. Verify how many channels your ITSP subscription includes.
Your outgoing calls work because they use channels 1-15.
As I noted earlier, it’s rare for an ITSP to provide 15 channels unless specifically requested—E1 typically comes in increments of 10 (10, 20, 30). I’m unfamiliar with T1.
Configuring additional channels should resolve the incoming call issue.
Additionally can you share "show controllers E1" output,What’s your translation pattern? Can you share your full configuration? Attach it as a text file, don’t paste it in the reply.
Are you sure about the number of channels that you have? It seems like the service provider is using channels outside of what you have defined on your end.
Not directly related to your problem, but you do not need to have “forward-digits all” on your dial peers for these reasons. On DP 201 it’s not needed as it’s an inbound dial peer and on DP 302 it’s not needed due to that you have this command, no digit-strip. That tells the router to not do any digit discard, so the other command is redundant. Also you do not need to have the “direct-inwards-dial” command on your outbound dial peer as that’s an inbound dial peer command.
