asterisk users - Dec 2004 - polycom phone IP 500/600 conference feature

Hi,

Has anyone used polycom phone IP500/600's conference feature? I ran into
some issues. 

Polycom is not behind NAT.
Polycom calls pstn number A, (gets two way voice), 
presses conference, (A is put on hold), 
calls pstn number B, (gets two way voice), 
presses conference again, suppose to have all three parties in the call,
polycom and B have two way voice, but polycom doesn't have two way voice
with A.

Has anyone experienced it before? I did some trace. It looks like that
polycom phone stops sending rtp packets to the first call, i.e. A.

Thanks,
Richard

On Thu, 2004-12-09 at 21:27 -1000, Richard wrote:
[snip]
> Has anyone experienced it before? I did some trace. It looks like that
> polycom phone stops sending rtp packets to the first call, i.e. A.
[snip]

I think I read somewhere on the list that the Cisco 79xx can't do 2 or
more simultaneous calls when it's configure for e.g. g729. Since the
Cisco 79xx is based on the Polycom IPxx perhaps it also applies to your
phone. If you are using any codec other than alaw or ulaw, try turning
them off and try again using alaw or ulaw exclusively.

Regards,
Patrick

Richard,

Could  you describe: ip address/network of each phone and network 
infrastructure that is in the middle of this communication.

Andrei

ps. I'm using Polycoms everyday, have not seen this effect yet.

Richard wrote:
>Hi,
>
>Has anyone used polycom phone IP500/600's conference feature? I ran into
>some issues. 
>
>Polycom is not behind NAT.
>Polycom calls pstn number A, (gets two way voice), 
>presses conference, (A is put on hold), 
>calls pstn number B, (gets two way voice), 
>presses conference again, suppose to have all three parties in the call,
>polycom and B have two way voice, but polycom doesn't have two way voice
>with A.
>
>Has anyone experienced it before? I did some trace. It looks like that
>polycom phone stops sending rtp packets to the first call, i.e. A.
>
>Thanks,
>Richard
>
>
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> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-
> bounces@lists.digium.com] On Behalf Of Eric Wieling aka ManxPower
> Sent: Friday, December 10, 2004 10:51 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] polycom phone IP 500/600 conference feature
> 
> Richard wrote:
> > The phone and * are all on public ip address. All other features and
> calls
> > are fine except the conference feature. I am using g711 ulaw for all
> calls.
> > The problem only applies to conference feature on the polycom phone.
> 
> We could not get the conference feature to work if we had the Polycom
> lines set to the same username.  Once we set each registration (for each
> line) to a different username it started working.
> 
I am not sure what you mean. We only have one line and one registration on
the phone. Btw, just want to be clear, this is the conference feature on
polycom phone, not on *.

Richard