[asterisk-users] Large Asterisk installarions (~10, 000 extensions), preferably at universities

[Terry Wilson]

> I've looked at doing various things to chan_sip to improve signaling
> performance (hash tables for call lookups, etc.)  I gave up when I
> realized that the overhead of handling the RTP was so far above the
> overhead of processing SIP signaling that it didn't really matter
> much.  The only reason I have ever had to use a SIP registrar (OpenSER

Keep in mind this was in 1.4.  They actually use hash lookups now  
anyway.