Barton.Bruce@camb.com (Barton F. Bruce) (03/13/91)
Does anyone know for sure if an AT&T 85 can detect and use for SMDR timing purposes answer supervision from the phone company? First, on ground start trunks, then can they do it on trunks on a T1 (not ISDN, just 24 vanilla trunks)? If not, is it lack of hardware support, s/w support, or both? Is anyone getting answer supervision officially (either tariffed or special assembly) in any NYNEX territory? If so, can you give USOC codes or any special codes that would plainly identify it?
bill@jartel.info.com (Bill Cerny,Baja JarTel) (03/21/91)
In article <telecom11.203.3@eecs.nwu.edu> Barton F. Bruce writes: > First, on ground start trunks, then can they do it on trunks on a T1 > (not ISDN, just 24 vanilla trunks)? We've got Megacom WATS here (delivered over a T-1, E&M signalling). Here's what the A&B bits do during a call: Terminal Network -------- ------- Channel idle (on-hook) 00 00 Off-hook, no supervision yet 11 00 Answer supervision 11 11 Far end hangs up 11 00 Near end hangs up (on-hook) 00 00 I tried to get ground-start, dial tone trunks on the T-1 to the AT&T 4ESS, but I found out that the 4ESS only supports E&M signalling.