Hello all,

In order to check that our Openser is running properly I use sipsak periodically. The command is :

sipsak -v -N -U -I -s sip:sipsak@213.5.xxx.xxx:5060 -a xxxxxxx

This works fine 99% of the time, however sometimes I get the following from sipsak :

warning: ignoring -i option when in usrloc mode

received:

SIP/2.0 400 Bad Request

Via: SIP/2.0/UDP 127.0.0.1:54393;branch=z9hG4bK.4d383307;rport=54393;alias;received=213.5.43.131

From: sip:sipsak@213.5.43.131:5060;tag=44d4f5ef

To: sip:sipsak@213.5.43.131:5060;tag=97e44c910458bd56beb40ca4028d7cc8.91db

Call-ID: 1154807279@127.0.0.1

CSeq: 2 REGISTER

P-Registrar-Error: Invalid CSeq number

Server: Altec Telecoms SIP Proxy

Content-Length: 0

error: didn't received '200 OK' on register (see above). aborting SIP failure

sipsak is running on the same server with Openser. Since the CSeq is 2 it means that Openser has received the first REGISTER, has asked for authentication, sipsak replied, but then Openser says "Invalid CSeq number". Has anyone seen this happen before and/or has a reasonable explanation?

thank you

George

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