Why not try to post in At&t Direct forum? (you can post there in »AT&T Direct )Im sure they will help you out. Or you still can keep calling At&t and hoping you will found a agent that know abt ISDN technology.
Just curious about ISDN latency. Is it same as DSL's latency? -- Curious about Sprint improved 3G and growing 4G LTE network? Then check it out at www.s4gru.com
And I found the number for at&t southeast ISDN. 800 -858 -9413 Not sure if they still using that number or must be SPECIFIC to order in SouthEAST. I found in this thread »AT&T tells me they dont do ISDN? -- Curious about Sprint improved 3G and growing 4G LTE network? Then check it out at www.s4gru.com