You got me curious. I'd be pretty leery of a "well known carrier" that couldn't tell me the framing format and line coding they were giving me. I worked for AT&T for 30 years and even a dummy can find that information on a word document, even if they don't know how to look it up in the switch. If it's AT&T let me know cause they laid off ALL there techs doing this stuff and gave the work to management, if you don't want to post it PM me.
Thanks,
Bill
