On Wed, Dec 30, 2015 at 4:40 PM, Chuck Guzis <ccl...@sydex.com> wrote:
> Speaking of 1980s/90s, are telcos pretty much the only ones using ATM > nowadays? > > --Chuck > > I can't speak for the whole Telco segment, but I work on DSLAMs for a living and have done so for the past 15 years. Our earliest generation DSLAMs were ATM based (T1 IMA fed), but within a couple of years transitioned to Ethernet. Almost all of the equipment that I come in contact with is Ethernet at this point, but I'm not on the front-lines and I don't have a lot of exposure to voice services though, but I think it is safe to say that telcos are vested pretty heavily in Ethernet these days. I'll have to ask a co-worker about the makeup of the networks he's seen in the field, but pretty much all the talk I hear about these days is all Ethernet. I occasionally hear about GR303, SIP and pseudowire ( a tech that allows for timely delivery of packetized TDM streams primarily for POTS services).