H323 trunk to IP Office 403

[Shauneee]

Hi All

I guess this is more of a "Why does it work at all?" question - so here goes...

Currently have CM 3.1.5 and all is well with that but the business pays for an external conferencing facility - ah ha! I can do this with our current switch so, sure enough (after a bit of searching here - thanks guys for various setup guides posted) managed to get it working fine with the standard limitation of 6 way conferencing...

Now, kicking round, I've got an IP Office 403 so the thought goes "Maybe I can trunk to it and use it's (ok) "basic" conferencing facilities (as it allows upto 63)" so, updated it to latest firmware and setup H.323 trunk to it fine... Now, I can call it (the 403) and speech is fine (even passes display etc) but when I call from an extension on it back to an extension on CM I just get waiting for line - ok, bit more digging about and silly me has just noticed it's not got the voice compression module in it (as getting no vocoders error) - but here is my quesion (finally got there!)

Why on earth can I call phones on it??? If there are no voice coders present on the 403 surely I should be able to get speech that way either! Indeed, just set up 10 "channels" on the trunk and made 10 calls into the 403's Conference facility and its all ok - just can't call out on it!?!

Here's hoping someone can explain it for me...

Thanks in advance

Shaun

 

[kwing112000]

you only need VCM's when doing an IP to TDM conversion. I dont think you need it for the conference.

Kevin Wing
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[kwing112000]

To get better answers you may want to post this in the IP Office forum. its more related to that than the CM.

Kevin Wing
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[Shauneee]

kwing

Many thanks for the replies... Sort of explains it a little but as suggested will post in that forum as well (wasn't sure where the issue was and didn't want to go off cross-posting!)

Shaun