Provisioning on a T1/PRI ??

[vbhere]

Thinking out loud !!

Currently I use a Tandberg-6000 that uses a T1/PRI circuit.

Can the circuit be re-provisioned to do the following:
- provide both switched service calling on part of the T1 and packet switched calls for IP calling.

My understanding is you can have data and voice on the same circuit. However, T1/PRI's usually have 23B+D where as IP calling would require D-signalling on each channel.

The reason I ask is if in future I have the oppurtunity to do IP calls with other parties I will via the existing circuit.

I guess all that I will need if it is reprovisioned is the IP,Gateway,subnet etc.

Thoughts !!

[Slimey]

yes take a look at www.adtran.com and the TSU and/or Atlas product set

[Entropy3XD]

I believe in another post you said that you had an Atlas 550. If you wish to make the switch to IP one day and still retain ISDN calling, then you will need a gateway. Once you have a gateway you really don't have a need for the Atlas 550 if the ISDN circuit is dedicated to your VTC network. Most likely you will be taking the ISDN circuit directly to the gateway.

If you plan to share the circuit with other equipment in your network, beyond your VTC, then the routing functions of the Atlas may become useful.



Another use for having the Atlas in front of a gateway is if you are doing secure applications with Type1 encryptors. In this case you would need a serial interface (RS-530/449) to the encryptors, and you would use a gateway with serial interfaces instead of a PRI interface. You would take the main circuit to the Atlas and then use Adtran video blades to interface to the equipment. Some users provision BRIs to the equipment instead, then use Adtran 512s to interface to the encryptors and serial gateway. Dial isolators should be used in secure applications for on screen dialing, but that is a separate discussion.



You can also provision a PRI to a gateway and and at the same time provision BRIs to codecs. I have seen this done in instances where the VTC network is H.323 and uses a gateway with a PRI. The customer had a need for a dedicated H.320 system. An Atlas was used to provision a PRI to the gateway then we added a BRI blade and provisioned three lines to the dedicated H.320 system. The main circuit was still shared, but the client had a dedicated ISDN system which was separate from the IP network.



Again, if the PRI is to be completely dedicated to your VTC network, and you plan on running everything over IP, using a PRI gateway for ISDN calling, then the Atlas does not really give you anything. Don’t ever get rid of that Atlas though, it’s a great piece of equipment.

[Slimey]

Indeed Entropy3XD adtran is a great company. We couldnt get our atlas 800 to work correctly with out mgc-100 and all the sites hanging off of it (everything is full PRI) so adtran rma'ed us a atlas 830 at no charge to take the 800's place since it was EOL. :)

Still didnt get the problems worked out but im waiting to update the mgc to 7.0 next week when our dongle should arrive and then see if the problem still exists between the mgc and the atlas. Just a FYI the problem is that when the mgc starts the disconnect procedure its like the atlas cant keep up and the ds0's that were active go into restart for about 10 mintues completely hoseing any new calls untill they release and go back into idle.