paolo bevilacqua Mon, 03/12/2007 - 09:18
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Registration and making calls are two different things, you do not necessarily need to be registered to make outgoing calls.


Under "sip-ua", configure username/password/realm, and the router should use them in the authentication phase for each ITSP.


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leonardo.vecchi... Mon, 03/12/2007 - 09:56
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Hi ,

I have tried to configure another username and password , the system d'ont permit me and show the message "only one username are permit per device"


paolo bevilacqua Mon, 03/12/2007 - 11:04
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Standby, research in progress.

paolo bevilacqua Mon, 03/12/2007 - 21:52
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Ok, it seems to me that the current IOS is severely limited in this area:


1st, in "sip-ua" you can configure multiple (up to 5) password/realm combinations, but a single username. That means, if can have different ITSP to assign you the same authentication username, you can use multiple ITSP.


2nd, the authentication configuration in "dial-peer" mode, is available only for pots dial-peer, not voip. This appears like a bug in my opinion, or I would be very curious to know the reason why.


The above is actually documented at:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123tcr/123tvr/vrht_a1.htm#wp1613546

I've tried the configuration in sip-ua mode, as long the username is the same, you can actually configure multiple password/realm combinations. One final comment, the output from CLI on succesful configuration like Updating password for realm: xxx is really non-standard in IOS.


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leonardo.vecchi... Wed, 03/14/2007 - 01:58
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Hi ,

you tasks that the problem may be resolved upgrading the CME , now is ver. 4.0 (C2801-SPSERVICESK9-M), Version 12.4(9)T1 .


paolo bevilacqua Wed, 03/14/2007 - 10:17
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No, this limitation is not version dependent. I have a feeling it may be corrected in a future because it so absurd, However I have no basis to support my thinking.


Hope this helps, if so please rate post!


that doesn't look like a bug, but is reasonable:

authentication aids billing and CAC on provider side. If you could use authentication on voip dial-peers then the ip-device in your network using this dial-peer could authenticate itself the same way as a gateway in question. but if it is an analog or tdm device, it cannot do that so we have authentication only under pots dial-peers.

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