[Serusers] SER in the message path

[Greger V. Teigre]

If you record route, SER stays in the signalling path. Any proxy in the 
path between two UAs that record route will stay in the path.
g-)

Nick Hoffman wrote:
> Several sources have told me that, once a call has been established, SER 
> does not stay in the message path between the caller and callee. However, 
> after examining some packet traces in Ethereal, I'm a little confused.
>
> I have the following setup:
>     Caller -> SER -> Asterisk -> VoIP Provider -> Callee
> When I start tcpdump on Asterisk and place a call to the PSTN, the only 
> devices that Asterisk is sending data to and receiving data from are SER 
> and the VoIP provider.
>
> Doesn't this mean that SER does in fact stay in the SIP message path for 
> the duration of a call?
>
> Thanks for explaining this,
> -- Nick
> e: nick.hoffman at altcall.com
> p: +61 7 5591 3588
> f: +61 7 5591 6588
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