No DTMF on 4+ person conference calls

[SteveDubuc]

I have a problem on a client's BCM 400 that I can replicate on our BCM 400. I make a conference call via an external line to a second person. After the second person is on the call, if I press the keypad numbers, I can send DTMF tones. I add a third person. I can still send DTMF tones. I add a fourth person. I can no longer send DTMF tones. From that point onward, I (as the call originator) can no longer send DTMF tones but the other people on the conference call can send DTMF tones. The client needs to have several people on the line and THEN access an auto attendant. Thank you for any help you may be able to shed on this issue.

 

[senk1s]

by any chance are you using SIP trunks?

Here is a note about that:
• RFC2833 in-band DTMF will not be supported in this release

 

[SteveDubuc]

Good thought, but no, we're using a PRI.

 

[SteveDubuc]

If this helps, we're using NI-2 protocol, ESF Framing, and B8ZS Line Coding.

 

[hawks]

Can you as the originator add a 5th person to the call?

 

[acewarlock]

What Ver and Rls is your BCM 400? I though you could only do 3 on a Conf, put then again I never tried it.




This is a Signature and not part of the answer, it appears on every reply.

This is an Analogy so don't take it personally as some have.

Why change the engine if all you need is to change the spark plugs.

 

[SteveDubuc]

When testing, I had myself and 4 additional people for a total of five. That was where I stopped testing. I was looking more for beign able to send DTMF rather than adding people to the conference. However, from what I am able to gather we have the capability to add up to 40 people to a single conference call. We had to purchase the capability to do that, however.

At our office, the version is 4.0.2.03
At the client's, the version is 4.0.2.03a