Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.


Connecting an NBX to a Cisco IP system

Connecting an NBX to a Cisco IP system

I am told another business unit on our corporate WAN has a Cisco IP system.
I was asked if we could talk accross the WAN to the Cisco LIke we do with our  8 NBX's
I know the VTL's won't work. Would the H323 Conections setup work?

RE: Connecting an NBX to a Cisco IP system

Last time I checked that was based on NT and not really supported.
What Model and Software version of the NBX do you have?
If you have a v300x, or a v5000 running 6.0x you can upgrade to 6.5.x for free and run SIP with native Voicemail support and create a SIP trunk to the Cisco system...

RE: Connecting an NBX to a Cisco IP system

Thank you. I did not want to go to 6.5 sip. I loose too much in the process.
But I do have a spare NBX that I can make a Sip Unit. Can a sip device make use of VTL's?
I am thinking that if i Have 1 SIP unit in my WAN and the reset are NIB using VTL's, I may be able to do this without too many features being lost.
Grasping for a straw.

RE: Connecting an NBX to a Cisco IP system

No, SIP units cannot do VTL's. They do SIP trunks.
Is the 3Com in the same office as the Cisco? If so, you can install a T1 card in each unit and connect them that way...

How many concurrent calls do you need between the units?
You can always use a ALC to SIP ATA to the Cisco
a PRI card to a SIP PRI ATA to the Cisco

RE: Connecting an NBX to a Cisco IP system

no, the cisco is somewhere on our national WAN. So it will be a SIP connection.
I would have the SIP enabled 3com in the same location as another NIB 3com. That was to be the link.
But I can connect the 3coms using T1 cards. That would allow connections to the other 3coms using vtls

RE: Connecting an NBX to a Cisco IP system

Yup, that would work.

RE: Connecting an NBX to a Cisco IP system


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!


Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close