asterisk users - Oct 2007 - Howto get origin IP address from SIP call reliably

Hi,

incoming SIP calls have a channel name in the form of:
SIP/<ip-adresss-of-peer>-<handle>

This is a way to get fetch the IP address of the remote side
of a SIP call - in most cases.

However, sometimes, instead of the IP address, there is a host
name in the channel name. I assume, this value in the channel name
is not the real IP address, but just a field filled in by the
remote SIP client. Thus, this is not a reliable way to check the
origin of a SIP call.

What is a reliable way to read the real IP address of the origin
of a SIP call?


Regards,
Roger.

Hi,

I'm running some Asterisk-machines, and on one of them i get this errors 
in the CLI, but i don't know what that means.

Hardware:
Digium 4-Port E1 Card with HWEC
Intel Pentium D 3 GHz
2 GB RAM
SATA Harddisk
Supermicro Mainboard

Software:
latest libpri/zaptel/asterisk of version 1.2

I tried also asterisk version 1.4.x, but there the problem occurs every 10 
calls, on asterisk 1.2 its about every 100 calls.

any ideas on this?

Thanks a lot

Nico

Roger Schreiter wrote:
> What is a reliable way to read the real IP address of the origin
> of a SIP call?
Maybe SIPCHANINFO(peerip) or SIPCHANINFO(recvip)?

Regards,
  Philipp Kempgen

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