I am looking for a solution to split T3 to 28 T1's, and uplink some of T1's to another site for redundancy. Is there an off-the-shelf equipment that does it?

Thanks,


M.S.

hi there
for that case you will need a SDH multipxexor. Here in Europe we use this method to spit high order STM1 frames to Lower order traffic.I suggest Marconi/Siemens SMA s.3.

You didn't mention if your needs called for some sort of fiber solution.  You did mention breaking a T3 down, and I assume that the T3 has already been dropped from some type of fiber shelf from a telco provider or???  Are you just looking for a standard 3/1 mux?  ADC has a few solutions that are rock solid in reliability and features.

Please be more specific on what you currently have.  

Is it a T3 pipe?  What equipment do you intend to have at each end? Router/PBX etc..

What type of traffic are you going to be running?  Voice/Data/Both?  

Any OFFNET providers and service type with them.  What kind of backup/protection you require?  

Do you want the circuit to switch to the backup automatically, or do you want to switch it manually when you find your circuit down?

Thanks, guys - sorry for late reply. The need had changed, since Telco refused to give us a T3 (for the T3 price, that  is, not for 28 T1 prices..).

So, now I have a simplier task of duplicating 2 T1's on each site, like this:

four T1's come to two separatate sites (2 on each) and plugged into 2 respective PBX's (one on each site). If a PBX goes down on either site, it's T1 voice traffic should be redirected (via fiber) a onto working one. Switchover time should be witin 1-2 seconds; ongoing calls can be dropped; new calls shold be processed by a working PBX.

I think I found a solution, but am always open for new suggestions...

Thanks a lot!

M.S.