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New Member

How to configure an ISDN BRI in USA?


    I'm trying to configure a voice BRI in USA. In contrast to the other countries around the World, in USA the NT1 must be provided by the customer, so I'm trying to use HWIC-1B-U to configure the BRIs. The PDI has confirmed me that these cards support voice, but the voice-ports doesn't appear in the gateway, so I can't configure the voice routing using dial-peers. Did someone try to configure voice BRIs in USA?


Super Bronze

How to configure an ISDN BRI in USA?


Voice cards start with VIC.

WIC= WAN Interface Card

HWIC = High Speed WAN Interface Card

Sounds like PDI are having an 'off' day.

Aaron Harrison

Principal Engineer at Logicalis UK

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Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
New Member

How to configure an ISDN BRI in USA?

Hi Aaron,

    That's what I thought but, for instance, some PRI HWIC card can support voice in some cases like:

    So I'm really confused. Take a look to the data sheet (

     "The Cisco 1841, 1941, 2800, 3800, and 3900 Series Integrated Services Routers with the Cisco 1-Port ISDN U interface HWIC provide customers with a choice of converged platforms that offer best-of-class data, security, WAN access, and voice services in a single system".

     Which card do you normally use to configure an ISDN BRI in USA?


New Member

How to configure an ISDN BRI in USA?

I've seen this thread from 2009:

Is this answer still valid today?

Hall of Fame Super Gold

Re: How to configure an ISDN BRI in USA?

You need VIC2-2BRI-NT/TE, and PVDM2 modules.

Nothing else will work for voice.

Recommend, before you buy hardware, study the documentation, or consult an expert.

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