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!
  • Students Click Here

*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.

Students Click Here


3com nbx TIELINES

3com nbx TIELINES

3com nbx TIELINES

Hello All
I am using a T1 card to tie two nbx's together. They are physically next to each other.
1 unit is running SIP mode and the other is running NIP mode, hense the tieline.
The Sip system can call extensions via this tieline no problem.
The SIp system can use the VTL's via the Tieline to call my other locations.
The SIP system can also be reached no problem.

My Problem is-- how do I make outgoing calls to PSTN from the SIP unit via the tieline?
Can this be done?
Thanks in advance

RE: 3com nbx TIELINES

I woud stick to using VTL's to connect the systems together.  Keep the T1 card as a hotspare in the office (those thingscosts over $3000). VTL licenses are a lot cheaper and that is how the nbx was meant to tie to other systems.  

When it comes to sip and the NBX though, you need to make sure you have devices setup as trusted endpoints.

RE: 3com nbx TIELINES

Thank you.
Unfortunately, my business group using NBX and VTL's to connect 8 sites,
has been aquired by a company that uses sip. My job is to merge them. That is why the tieline.
I can't convert my nbx's to sip as I have too many older phones(non sip-able).

RE: 3com nbx TIELINES

to tell you the truth it sounds like youre stuck between a rock and a hard place.

With the nbx, the problem with SIP is that its all or nothing. To do this, first you need to upgrade the NBX to 6.5. Once on that version then you need to buy the sip license for the nbx.  How may phones do you have off of the new company pbx and what type of pbx is it?  how many users do you have hanging off of the nbx?

Is the nbx/new system in the same location?  If not, is it possible to move the nbx to the new company location? because that is going to be your only other option if you cannot go to sip.  You will need the controllers to be side by side connected via T1 or q.sig

RE: 3com nbx TIELINES

Thank you again.
I am at 6.5.22. There is no SIP license. Just a check mark.
 They are using SIP phones to tie to the PSTN. Now they want the same SIP phones to  tie to the SIP enabled NBX. Which is working.
My problem is with the T1 tieline Dialplan.
I believe I have the solution and will update after testing

RE: 3com nbx TIELINES

If you set up your T1 setting correctly, everything works!!
What a surpise.
Thank you all for your help!

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