Telephone Backup plan

I have T1 line with more than 400 DIDs. We use cisco CUCM to manage calls. Unfortunately we T1 line is not working and some major problem in ATT side and will take few days to come backup. We have no calls coming in and out for few days now. What is the quick alternative solution is this scenario to make all lines work?.
sumod_jacobSenior IT ManagerAsked:
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Ken BooneNetwork ConsultantCommented:
Well without a pipe you are kinda hosed on a quick solution.  The only thing I can think of is to have ATT re-route the main DID numbers to a few cell phones until they get the circuit backup.

You can try to bring in an internet based SIP provider, but again you might need to get a router running CUBE so again, not necessarily quick.  Even so, you would have to get ATT to reroute those number to the ones coming in on the SIP trunk.  Again takes time.
Ken BooneNetwork ConsultantCommented:
The long range plan would be to have multiple T1s with diverse paths in to the building  and have ATT route DIDs down either line in the case of an outage.  An alternative is to go with a SIP provider, port all your numbers to the SIP provider and again have diverse paths coming in from the SIP provider.
Bryant SchaperCommented:
Agree with Ken, kind of hosed on that one.  You need multiple paths so the carrier can reroute traffic, SIP being a good option, but I doubt you will have anything in a few days.  You best bet is to pressure ATT a few days to repair is a long time, I bet you have an SLA that says they need to address faster than that.

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sumod_jacobSenior IT ManagerAuthor Commented:
I've requested that this question be deleted for the following reason:

Nobody Answered
Ken BooneNetwork ConsultantCommented:
This question WAS answered.  The author may not have liked the answer, but the answer was correct and confirmed by a 2nd party as well.
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