04-18-2009 04:48 PM - edited 03-15-2019 05:31 PM
I have a pabx on each site, each Pabx connects to a router via a E1, The routers should then send the calls accross the WAN to each other.
Currently the connection between the Pabx and the routers is working, as the users can get a dial tone from the routers. when they try to dail any digits the call is dropped (the dial peers are in place. I can't see the DSP's being used. Looks like as soon as the call is sent from the Pabx to the router it is drop and nothing happens. this problem is identical at both ends. Can some please look over the config and see if i am missing anything.
04-21-2009 12:03 PM
05-19-2009 06:47 AM
04-21-2009 02:26 PM
Pbx guy says the trunk is configured for Qsig, So i have configured the router for qsig also! the old voip router was also configured for qsig and it worked, so i think that is ok. i will try the "GW-accounting" and see what happens.
the pbx has also said that they have configured the trunk to use timeslots 1-8.
I have configured the router to use timeslots 1-24 Will that make a difference?
04-22-2009 01:22 AM
Number of channels- yes, You probably see that you are using bottom up- channels 24, 23,22 etc and so these do not existing in the TDM.For a quick test check the order in the CUCM of the channels- if it is botttom up i.e channel 24 change it to top down. If this works change the number of channesl to match the TDM
04-22-2009 03:46 PM
I am not using CUCM, just a pbx connected to the router, call then sent accross mpls to another site router which is connected to that site pbx.
your idea sounds good i will give it a try and change my timeslots down to 1-8 and see what happens.
thanks
05-19-2009 07:12 AM
Have you checked the framing as well as the timeslots. here is an excert from one of the routers I have configured in the past for Q-Sig to a PBX card
controller E1 0/0/1
framing NO-CRC4
pri-group timeslots 1-31
interface Serial0/0/0:15
no ip address
isdn switch-type primary-net5
isdn overlap-receiving
isdn incoming-voice voice
no cdp enable
Hope this helps
Paul
05-19-2009 07:55 AM
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