Hello,

We are looking for a OC3 -> 3xDS3 MUX. (If it can grow up to a OC12 -> 12xDS3 thats a plus) Sonet side will be 1+1 protected

I have looked at the following equipment is there any other sonet muxes that i should look at?

Adtran Opti-3 Adtran OPTI-6100 Cisco ONS 15310, 15327 Fujitsu Flashwave 4010, 4100, 4300 Fujitsu FLM 150

The difference between Fuji and Cisco is the backplane architecture. The former is redundant and is a five nines solution. The latter is not and is a four nines solution. You will find the cisco device cheaper to buy and operate. The cisco is also less RU and less power. If you haven't already lighted your own dark fiber network, there's a lot to know at layer 1 to be sure you get the redundancy you're looking for in layer 3. Have you considered leasing circuits from a LEC or buying a wavelength managed service? -M<