Hi, Does Asterisk have a limit to how many NAT'ed SIP clients it supports behind a single IP?
I have the weirdest problem ever. I have three SIP endpoints. SNOM phones, if it matters. Their extensions are 200, 201 and 202. Apart from the username/password, the sip entries in sip.conf all have identical configuration. They're all NAT'ed behind the same IP. 200 and 202 registers just fine, but 201 is completely ignored by Asterisk. I've traced the REGISTER packets from the phones and compared 202 to 201. They're pretty much identical, apart from tags, CSEQ and stuff like that. 202 gets a 100 Trying reply, but 201 doesn't get anything. There's nothing going on in Asterisk console debug output. I then moved the 201 phone to a different LAN, so it got NAT'ed behind a different IP. There are other phones on that LAN which registers fine. Still no response from Asterisk though. Then I moved it to a third network, still NAT'ed, but without any other SIP clients. There it registered just fine. I then disconnected it, let it time out in Asterisk and connected it to the first LAN again. No reply. So this leads me to believe there's some kind of limit per IP on NAT'ed SIP clients. Can anybody shed some light on this? [200] type = friend username = 200 secret = 200secrets host = dynamic amaflags = default accountcode = myrealm context = incoming realm = myrealm dtmfmode = rfc2833 language = da nat = yes callgroup = 20 pickupgroup = 20 callerid = "SNOM" <200> qualify = 3000 [201] type = friend username = 201 secret = 201secrets host = dynamic amaflags = default accountcode = myrealm context = incoming realm = myrealm dtmfmode = rfc2833 language = da nat = yes callgroup = 20 pickupgroup = 20 callerid = "SNOM" <201> qualify = 3000 [202] type = friend username = 202 secret = 202secrets host = dynamic amaflags = default accountcode = myrealm context = incoming realm = myrealm dtmfmode = rfc2833 language = da nat = yes callgroup = 20 pickupgroup = 20 callerid = "SNOM" <202> qualify = 3000 -- Regards, Tais M. Hansen ComX Networks A/S Tel: +45-70257474 Fax: +45-70257374
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