Larscom has the best NxT1 IMUX because they were first and hold the patent. All other weak imitators have not completely copied the design in order to avoid obvious patent infringement. The Orion 4000 platform also makes it convenient to groom these NxT1 data streams into a channelized DS3 for transport on the larger trunks. All other IMUX competition suffers performance and operational glitches not found on the Larscom product. Example, Digital Link 3800 can't even run over 2Mbps on V.35 interface without horrible clock jitter. Larscom runs cleanly up to 12 Mbps.Also DL unit can't reliably run 8xT1. On the subject of profits, the broadband products enjoy much larger margins than the low speed stuff so I'm sure this deal will help a lot.