The 19” chassis pins out a bit different. It only uses 3 Amphenol cables but all the same cards will work in the chassis. One amp is for slots 1-6, one is for slots 7-12 and the other is for slots 13-18.
For E&M it would use pins 1/26 for T/R, 2/27 for T1/R1, 3/28 for E/SG and 4/29 for M/SB.
Here is a link to the 19" Chassis Installation & Maintenance Guide.
Here is a link to the 19” TA1500 Pin Out – Automatic DS0 Mapping document.
Thank you, I'll give that a try. I looked through both of those documents before, I guess I was looking for something that explicitly said E/SG was this pair, etc.