asterisk users - Sep 2011 - Sip profiles per customer, behind a SIP proxy. How?

Hello List,

I have been trying to configure  a sip profile ( peer / friend ) for each of
my customers behind a sip proxy for some time, but I have had no success, so
I would appreciate your help.

Customer  -> OpenSIPS -> Asterisk -> PSTN

The opensips is working as a sip proxy with record route, for billing, load
balancing and authentication purposes.

I would like to be able to define a particular context, or settings per
customer. Since the customer is behind the SIP proxy, all I see if the
packet comming from the SIP proxy. So I have created a peer profile with the
IP Address of my proxy. Problem been any setting I enable affect all
traffic coming throught the SIP proxy.

I was reading that Asterisk checks the SIP From: address username and
matches against names of devices with type=user-

However I have some problems with Asterisk 1.6.2, taking the caller id
either from the RPID so I manually parse the PAI header.

I was thinking about replacing the From with a customer ID, and for those
customers that use the FROM to signal caller id, to copy it over the PAI
header at the SIP proxy.

I don't know if overwriting the FROM would cause any problem with the SIP
clients behind the proxy.

Is there any better or different way to acomplish this?

I would say we should have some flexibility although we have a SIP proxy as
the source IP for all of our traffic.


Robert
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On 09/10/2011 09:16 PM, Robert Thomas wrote:
> Hello List,
>
> I have been trying to configure  a sip profile ( peer / friend ) for
> each of my customers behind a sip proxy for some time, but I have had no
> success, so I would appreciate your help.
>
> Customer  -> OpenSIPS -> Asterisk -> PSTN
>
> The opensips is working as a sip proxy with record route, for billing,
> load balancing and authentication purposes.
>
> I would like to be able to define a particular context, or settings per
> customer. Since the customer is behind the SIP proxy, all I see if the
> packet comming from the SIP proxy. So I have created a peer profile with
> the IP Address of my proxy. Problem been any setting I enable affect all
> traffic coming throught the SIP proxy.
>
> I was reading that Asterisk checks the SIP From: address username and
> matches against names of devices with type=user-
>
> However I have some problems with Asterisk 1.6.2, taking the caller id
> either from the RPID so I manually parse the PAI header.
>
> I was thinking about replacing the From with a customer ID, and for
> those customers that use the FROM to signal caller id, to copy it over
> the PAI header at the SIP proxy.
>
> I don't know if overwriting the FROM would cause any problem with the
> SIP clients behind the proxy.
>
> Is there any better or different way to acomplish this?
>
> I would say we should have some flexibility although we have a SIP proxy
> as the source IP for all of our traffic.
Olle Johansson has a developer branch that includes a method to do 
exactly what you are looking for; I suggest you look him up and find out 
what state it is in, and see whether you can help test it.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org