10-02-2006 11:57 PM
We have a branch office PBX over LL using Voip. Branch office subscribers connect to the PSTN through the central router then the central PBX.
Our problem is DTMF tones can not be used for outgoing calls to PSTN.
And also CCBS (completion of calls to busy subscribers) can not be made through our network.
Any help would be much appreciated.
10-09-2006 10:54 AM
Need to know how PBX is sending DTMF, inband or an out of band method similar to RFC2833? Where is the cisco gear? ;-)
Chester
12-20-2006 09:08 AM
Hi, did you solve this issue?
I got the same problem about CCBS.
The ISDN configuration we use is:
interface Serial0/1/1:15
no ip address
encapsulation hdlc
no logging event link-status
isdn switch-type primary-qsig
isdn overlap-receiving
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
no isdn gtd
no cdp enable
And also, CCBS can not be made through our network.
thanks for your help.
-Mario
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