Daryl,
normally, a PSTN provider who offer quality service must offer a way to detect hanged calls. There is also a detection mechanism based on media (on GW) - at least CISCO GW have.
regards, bogdan
Daryl Sanders wrote:
This is exactly what I am trying to overcome. Do third party PSTN providers typically employ any other means of monitoring a call? I would think the would automatically disconnect the call after a certain amount of time if there was no media detected.
On 10/27/05, Iqbal iqbal@gigo.co.uk wrote:
problem with session timers, is if you have several different routes and you dont control all the end gateways....then its a pain, so I would think you would need a plan B, just in case to ensure you double checked, but agree with bogdan, b2bua i great but I think the overhead is not needed.
Iqbal
Bogdan-Andrei Iancu wrote:
Hi Greg,
that's the fortunate case of having already a B2BUA on the path :). But only for this particular case, I find the usage of a B2BUA a little bit to "heavy"....
Session Timer is actually doing a great job ;)
regards, bogdan
Greg Fausak wrote:
The re-INVITEs definitely work. I run some setups with Jasomi inline (a commercial inline b2bua). I configure them to reINVITE, works like a charm. If the reINVITE isn't answered (in either direction) the Jasomi sends BYEs in both directions. I believe other commercial gear works that way.
Also, I believe Session-Timers are supported by Cisco gateways, but I don't have experience with those.
-g
On 10/27/05, Daryl Sanders daryl.sanders@gmail.com wrote:
Thanks for the info guys! It sounds like I need to do a little reading up on cseq to determine if this will even work, or find a PSTN gateway provider that supports Session-Timers.
- Daryl
On 10/27/05, Bogdan-Andrei Iancu bogdan@voice-system.ro wrote:
by sending re-INVITEs from the middle of the path you will increase the cseq number differently on each side...so you will need to synchronize the cseq value when some in-the-dialog requests are passing through your proxy....and that's quite complicated....
regards, bogdan
Daryl Sanders wrote:
>Would it be possible to fake a REINVITE then check the response to >determine if a call is still in session? Just brainstorming... > >- Daryl > >