Do you know which box is delivering the service? There are a couple of different ways that this could be delivered and lots of incompatabilities between muxes. Cisco 15454 can do this as can Nortel OM and Lucent Metro. The 454 is horrifically expensive though but if you are already a cisco shop it could be the simplest option. Downside to all these devices are the management systems are somewhat not what you'll be used too. :) might be worth asking the carrier to do this for you as for them its could simply be a card in the existing mux (assuming it is a SDH service). Neil -----Original Message----- From: Alexander Koch <efraim@clues.de> Sent: 21 May 2007 07:32 To: nanog@nanog.org Subject: SDH mux question Folks, I am wondering if anyone of you folks know a box that could take the 4 STM-16 from a STM-64, but with a 4 fiber handoff to a random carrier. Who knows of such a box by any chance? I was looking for the DWDM- type of things (MRV, Transmode) any maybe those do exist. Thanks folks! -ako