[asterisk-users] Is it possible to have two endpoints to the same IP address where one uses IP based authentication and the other requires asterisk to register to that system?

[Dan Cropp]

Thanks George

I originally didn’t have the 1002@ for the identify.  Changed that when things were not working.  I changed it back.

Unfortunately, the system I am connecting with doesn’t seem to support the line support.  Looking at the SIP packets, I see Asterisk send it.  Unfortunately, they do not send the line information as part of the INVITE.  I checked with some developers of that system and they do not know anything about the line setting.
Is there any rfcs I could refer them to?


From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of George Joseph
Sent: Thursday, December 14, 2017 10:59 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Is it possible to have two endpoints to the same IP address where one uses IP based authentication and the other requires asterisk to register to that system?



On Wed, Dec 13, 2017 at 10:51 AM, Dan Cropp <dan at amtelco.com<mailto:dan at amtelco.com>> wrote:
Currently using PJSIP.  First, they want me to get this working with the existing PJSIP configuration, but then setup a second box using chan_sip performing similar work.

For PJSIP…
I currently have an endpoint configured to a system using IP based authentication.  It is configured with a match setting in the endpoint section.
All channels coming from that IP address go to this endpoint.

They want me to keep this endpoint, but add a new endpoint where we register with them.

Existing…
[transport1]
type = transport
bind = 0.0.0.0
protocol = udp

[1002]
type = aor
remove_existing = yes
contact = sip:1002 at xxx.xxx.xxx.xxx

[1002]
type = endpoint
context = mycontext
transport = transport1
accountcode = 6
dtmf_mode = inband
device_state_busy_at = 48
force_rport = no
identify_by = username
from_user = 1002
disallow = all
allow = ulaw
acl = acl1

[identify112]
type = identify
endpoint = 1002
match = 1002 at xxx.xxx.xxx.xxx<mailto:1002 at xxx.xxx.xxx.xxx>


Check this first...  identify112 probably failed to load because the match parameter can only take an ip address
plus an optional netmask, or a hostname.  The '1002@' is invalid.




I setup the registration and the endpoint.

[286]
type = aor
remove_existing = yes
contact = sip:286 at xxx.xxx.xxx.xxx
qualify_frequency = 60

[auth8]
type = auth
username = 286
password = yyyyyyyyyyyyyyy

[286]
type = endpoint
context = mycontext
transport = transport1
outbound_auth = auth8
aors = 286
accountcode = 22
dtmf_mode = inband
device_state_busy_at = 48
force_rport = no
disallow = all
allow = ulaw
acl = acl1

[registration3]
type = registration
transport = transport1
client_uri = sip:286 at zzz.zzz.zzz.zzz
server_uri = sip:xxx.xxx.xxx.xxx
contact_user = 286
outbound_auth = auth8
expiration = 3600

The registration for the second endpoint works fine.  However, when I call through the other system for 286, it is failing.  For the INVITE from the other switch, the from_user varies depending on who is calling.  Asterisk logs report “No matching endpoint found” when it processes the INVITE for 286.

I believe the reason INVITEs work for the other channel is because they are programmed to support the match for this IP address.

Can anyone offer some suggestions?

You may be able to use the 'line and 'endpoint' registration parameters...
[registration3]
type = registration
...
line = yes
endpoint = 286

This causes asterisk to put the encoded endpoint name in the outgoing Contact header.  If the provider properly echos back Contact parameters when sending responses or new requests, asterisk will use the line parameter to match an endpoint.  I'll have to double check but I believe we do that BEFORE checking any identify object for a match.





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George Joseph
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