To extend Juha's info:
Only SER server that just received SIP packet from SIP device (either register or keepalive) can send something back in case of NAT
For example you have SER1 and SER2, client A registered on SER1 and client B on SER2, when client B sends call to client A it will first hit SER2 then SER2 to according to replicated location table will try to send it to client A straight and fail in case client A behind the nat (which is quite often in real world)
Trick is to teach SER2 to forward call to SER1 when needed, it can be done when you use b2bua that looks to same location table for example (ser need to be taught to place its IP also in same table).
Can not give you exact howto but can give (out of list) some references to commercial software if interested.
-----Original Message----- From: serusers-bounces@lists.iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Juha Heinanen Sent: Tuesday, September 19, 2006 8:52 AM To: Andrey Kuprianov Cc: serusers@iptel.org Subject: Re: [Serusers] Scaling SER
Andrey Kuprianov writes:
mediapoxy'll handle it.
mediaproxy does not forward sip requests.
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