[Asterisk-Users] Grandstream hold one way audio -URGENT

[Jason Adams]

We are using the same phones in our office with firmware 1.0.1.13 and
have no issues. 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tom Vile
Sent: Tuesday, February 14, 2006 4:35 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Grandstream hold one way audio -URGENT

Yes, we have and we just got rid of them because of it.  We use higher
end phones like Polycom, Snom and Cisco now.



On 2/14/06, Ronald Voermans <r.voermans at global-e.nl> wrote:
>
> Hi all,
>
> At our customer site i've installed one asterisk server with 20 
> Grandstream GXP2000's. Firmware 1.0.1.9. When someone dials the 
> customer, the receptionist picks up, and does an attended transfer 
> (the 'grandstream way') to a collegue. Most of the times this goes ok,

> but sometimes, when the receptionist puts the call on hold, and tries 
> te reconnect to the caller there's only one-way-audio. The 
> receptionist can hear the caller, but the caller cannot hear the 
> receptionist! I've done several ngreps etc. and I can see that traffic

> is going from asterisk to the receptionist phone, and vice versa.
>
> I can predict when this is going to happen: when the receptionist 
> places the call on hold, the caller doesn't hear musiconhold. If the 
> caller does hear musiconhold then everythings goes well. Asterisk 
> states in both occassions that it is starting musiconhold, and again, 
> with ngrep i can see the RTP traffic going from asterisk to the caller
and vice-versa.
>
> I'm thinking this is a problem with the Grandstream phones, but I'm 
> not sure. I upgraded to of the phones to firmware 1.0.1.12 today, and 
> will contact the customer tomorrow if it had helped. Has anyone ever 
> seen this kind of behavior with Grandstreams/Asterisk?
>
> Thx,
>
> Ronald
>
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--
Tom Vile
Baldwin Technology Solutions, Inc
Consulting - Web Design - VoIP Telephony www.baldwintechsolutions.com
Phone: 518-631-2855 x205
Fax:     518-631-2856
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