We have a scenario where we have a DS3 at a Customer location that they want to use for both Data/PRI(voice) They need 8 Voice PRIs and they want to use the remainder of the DS3 for data. If we channelize this DS3, my question is, is it possible to use the unused portion of the DS3 as a fractional DS3, or would we have to terminate the rest as single T1s?
Thanks,
-Drew
Drew Weaver wrote:
We have a scenario where we have a DS3 at a Customer location that they want to use for both Data/PRI(voice) They need 8 Voice PRIs and they want to use the remainder of the DS3 for data. If we channelize this DS3, my question is, is it possible to use the unused portion of the DS3 as a fractional DS3, or would we have to terminate the rest as single T1s?
We just went through this here. The Adtran T3SU-300 with two DSX-1 cards will do exactly what you want to do. Each DSX card peels off 4 DS-1s, leaving you with approximately 33 Mbps of bandwidth on the built-in HSSI port.
Only drawback is that you need HSSI cards in the routers on both ends to handle the IP part.
If you need any details or help with the setup, give me a shout. Been there, done that.
Hi Drew,
We have several customer we do this with using DS3s. On our end we use
an Adtran 830 DACS (pretty inexpensive).
We use the T3SU at the customers end with various cards (depending on
how much voice they want. We break out the voice channels and then run a
HSSI connection to a router as a fractional DS3.
In our case, we originate the dialtone at our facility with PRIs. then
pipe then to the different customer locations that terminate via DS3s
and CT3s at our facility, but you could easily do it with a
point-to-pint DS3 and some Adtran equipment.
I would suggest giving Adtran a call as they have a great pre-sales
engineering department. And no I don't work for Adtran 
Hope this helps.