this is a point-point T1 between sites, yes? directly connected between the two systems, or do you mux the circuit to run both voice and data?

get on your network with your PC, login to ShoreWare Director, make sure you have green, happy lights on your Quick Start page. you can drill down to the ShoreTel switch that connects to the MICS and look at status and error counts.

if you only have the one T1 card in your MICS, then it will get its timing from that T1 circuit. be sure to setup your ShoreTel switch to be the "master".

setup a phone on the MICS system to have "Appear Only" for each of the four tie lines. this lets you manually select each line for testing -- and you can see whether each tie line is idle, or seized. will help troubleshoot. then you can attempt to make your tie line calls as you normally would, and watch the line indicators.

this is obvious, but make sure all four lines that should be in Pool B really are.

if you have it, you can use your Norstar Remote Utilities to do all of this, too. you don't have to be on site at the MICS location. conversely, you can Remote Desktop into your Shoreware server, and use the Trunk Test Tool to watch the tie lines in real time, and/or also to make test calls. ShoreWare Director's Quick Start/Switch Maintenance page also gives good information.