[Serusers] connection being dropped
jan at iptel.org
Mon Feb 9 20:31:58 CET 2004
On 09-02 14:24, Srbislav Cvetkovic wrote:
> Have any of you had an experience with Grandstream BudgeTone phones? My
> outgoing calls are being dropped after 16 seconds. My system looks like
> Grandstream phone --->
> SER sip proxy ----> VEGA 50 SIP
> x-lite softphone ---->
> When i make an outgoing call from my softphone it works fine. But not
> with ip phone. After 16 sec. my VEGA gateway disconnects the call.
> After talking to VEGA customer support they told me that my ip phone is
> not replying back to VEGA's ACK requests, and eventualy after 26 sec.
> VEGA dropps the call. Does anyone out there have a similar setup or
> ever experienced such a problem? I am running the latest firmware on my
> ip phone.
There is no reply to ACK and the gateway does not send any ACK in this
case. The ACK is generated by Grandstram and x-lite. Use ngrep (or
similar tool) to check whether the grandstream phone gets 200 OK and
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