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

[Tom Vile]

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
>
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
>
> Asterisk-Users mailing list
> To UNSUBSCRIBE or update options visit:
>
> http://lists.digium.com/mailman/listinfo/asterisk-users
>
>
>


--
Tom Vile
Baldwin Technology Solutions, Inc
Consulting - Web Design - VoIP Telephony
www.baldwintechsolutions.com
Phone: 518-631-2855 x205
Fax:     518-631-2856