What IOS version are you running on the CUBE? I can think of a couple of things.
1. In 15.6(2)T, a new feature has been introduced called multi-tenant where you 
can configure separate voice class tenants. Each tenant can have separate 
authentication mutually exclusive to one another and can be bound to different 
interfaces.

2. In your current IOS, check if you are able to configure the authentication 
and credential commands at the dial peer level. I am not sure which IOS had 
this introduced but it is worth a try.



Sreekanth

Sent from a phone.


-------- Original message --------
From: Nick Barnett <[email protected]>
Date: 5/4/16 8:03 PM (GMT+05:30)
To: Brian Meade <[email protected]>
Cc: Cisco VoIP Group <[email protected]>
Subject: Re: [cisco-voip] Authenticating sip trunk to ITSP from CUBE?


I'm binding control and media to my inside interface:

sip

  bind control source-interface GigabitEthernet0/0
  bind media source-interface GigabitEthernet0/0

I suspect this is the issue... is there any way to make the REGISTER messages 
come from the outside gi0/1 interface?

The reason I'm binding to inside is that we have a a very fluid internal 
network. I have to make and modify internal dial peers almost daily.  When I 
need to create a dial peer and put the bind statements on the dial peer, it 
won't bind properly since there are active SIP calls on the CUBE... so I bound 
it globally. My external dial peers rarely change, so I bind those directly to 
gi0/1 (on the DP).

I was under the impression that REGISTER events can take place without a dial 
peer... but is there a way to, i dunno, make a dial peer for register messages? 
 Can I use SIP profile magic to get it working as is?

I found this article which is pretty much exactly what I'm dealing with, but it 
doesn't mention REGISTER at all...

   
https://supportforums.cisco.com/blog/154506<https://urldefense.proofpoint.com/v2/url?u=https-3A__supportforums.cisco.com_blog_154506&d=CwMFAg&c=M-KQspD_LQogCbR-BWCHOaeDEPOhF8vWqHZTaiwxT3c&r=T9uVLZucbHG2NKKKzOrp-o5cpdReHj02PkJJsCVkgfwcv7S0R5lDeFJg2VRbiNih&m=UIAzGDQs8RCZld9kCbExwqpJhTgzpDVwM0k8_I7JRqU&s=jZN-R2pRsZOWN3r5is-aSivDlf9hqddUzDIoOWRWc3E&e=>



On Wed, May 4, 2016 at 9:06 AM, Brian Meade 
<[email protected]<mailto:[email protected]>> wrote:
Do you already have the SIP bind under voice service voip?
voice service voice
 sip
  bind all source-interface FastEthernet0

On Wed, May 4, 2016 at 9:58 AM, Nick Barnett 
<[email protected]<mailto:[email protected]>> wrote:
I've never dealt with an authenticated SIP trunk before and I'm having some 
issues. I was wondering if anyone has had a similar experience. I already have 
2 SIP trunks from ITSP-1 that do NOT require authentication. These are working 
fine and have been for years.

We are adding ITSP-2 and their SIP service DOES require auth.  I've followed 
their integration guide (which left a lot to be desired) and their acceptance 
team is telling me my auth is coming from our private class A address.

Our CUBE is in HA with an inside (10.x.x.x) and outside (public) IP address. 
They are seeing REGISTER messages sourcing the inside VIP.

I was looking around for an auth BIND statement or something like that, but I 
haven't had any luck. Any pointers?

Thanks,
Nick

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