DID DR Plan

[technickelone]

We have a group of 6 PRI's from carrier "A" that handle our inbound 555-3000 DID service and first choice for outbound as well. We have 2 PRI's from carrier "B" that are in the same route in our PBX incase carrier A goes down. Then, only outbound calls will work and inbound gets a busy.

If I order a matching group of DID's that have the same last four digits as our DID's from carrier "B" wouldn't you think carrier A could foward (not port) the entire trunk group over the carrier B incase carrier A goes down?? Then DID'S would work.

They only send four digits anyway and the PBX wouldn't know the difference, right??

Technickelone
CCNA

 

[dj4020]

The reason this is happening is the DID's are routed to a specific PBX route. If you want this to work you need to work with your provider to rollover to another route in case of route failures. I do not know that getting a second set off DID's would do anything for because if the number is dialed as 555-255-1000 it is propagated through out the telcom routing schema. Then to have a second number persay 555-254-1000 you would still have to dial that number to get to a specific route.

 

[trvlr1]

You could talk to carrier A about forwarding each DID to the corresponding number, but I can only imagine that would be additional cost ongoing as well as the original programming, unless you have a very understanding vendor. For the short times you are likely to be down, you would have to balance off the cost against likely down time costs to the business. Better solutions might be to break up your Carrier A 6 loops into 2 groups each with primary and secondary D channels and have them roll over to each other in the event of an outage. If you still need to go to the other carrier, you might want to think about forwarding all calls to a single DID on the other carrier which you send into a recorded announcement saying "due to technical difficulties ...etc" then send them into an auto attendant to route themselves, with the option for an operator if you have one. Hope this gives you food for thought!

 

[johnpoole]

we have almost the same set up, carrier b acts as a fail safe.. two offices but if route a is all busy, route b starts getting inbound..

the problem is when the pris are not down (disu) but up and not taking calls.. they return a busy instead of stepping to route b.. disu or all busy works just like your trying to do..

you can get service assure, that gives you access to reroute your inbound to another pri in case of fail.. we use it on your 1800 service.. we change the dnis to send it via another path

john poole
bellsouth business
columbia,sc