It is a bit tough. There are some special headers added, but they can be changed or removed (e.g., server, warning). If you have an account to that server, it is easier, because you can watch traffic in a call. Early versions of openser used same phrase in 100 reply from TM. Now they are different, but not the "Trying" as in RFC.
Also, building branch value in ACK is different in specific situations. I d not remember all differences, but with a bit investigation some criteria can be found.
Cheers, Daniel
On 03/21/07 15:58, Cesc wrote:
It'd be interesting to be able to identify either ... like nmap tries to do with the end OS ... but knowing whether it is a ser or openser i guess it would be a nice first step ... :)
Cesc
On 3/20/07, Daniel-Constantin Mierla daniel@voice-system.ro wrote:
Hello,
On 03/20/07 19:57, Michel Bensoussan wrote:
Hello
Is there a way to know which commercial SIP servers are based on openser or ser? Or if a specific SIP server is based on openser or ser?
:-) you want to differentiate between openser and ser, or between openser or ser and other SIP servers?
Cheers, Daniel
Thanks.
Regards, Michel.
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