One PRI , two devices

Do you have an adtran on which the PRI terminates and has two DSX ports that will split the resources.

The issue deals with what PRI you have.i.e. SIP trunks? Or you have a channelized T1.

SIP trunked PRI often are auto adjusting based on need.
I.e. 10 calls will use up 10 channels, while leaving the remaining 13.
Ae you trying to have a VOICE and DATA use on a single PRI?

I am trying to split a channelized PRI for two phone systems. Is this possible?

You could the issue is what resources you have and the types of phone systems.
I.e. what type of input each system requires.
It will not be a switch, but a router.
Adtran has different products.
Some could use a DSX (digital voice) and a portion might go to an analog portion.

Can you outline what it is you are trying to do.
With more detail, an answer might become clearer.

Do you want the capability of having the two phone systems interact without using the channelized PRI?

It would be 2 allworx 48x units splitting a single full PRI.

Your best bet is to check with allworx to see if you terminate the t1/PRI on a separate device and then have that device connect the other two.

Do you also get data on that PRI?
You would need the front router with DSX1 ports.

The allworx has a built in PRI port. I was hoping there was something like a PRI switch per say i could use.

Channelized T1 has to terminate on a router.

Ok so here is it now that I am on a computer and not my cell.  I looked more into what I want to do and found that I have do actually do SIP for the allworx 6x  and PRI for the 48x.  So here is a network map of sort.  So my thought is WHAT kind of router can I hook my Allworx 48x units into that will use specific channels on the PRI. Is this possible and what kind of router do I use.  I will also need to do this with SIP for the Allworx 6x units. Same question.

PRI
  |
  |
ROUTER?
  |-------------------------
  |                              |
Alworx 48x            Alworx 48x