What is Bay 2, Slot 3, Circuit 10 on Mitel SX-200

[fakerplaymaker]

I was tasked with running an cat6 extension for a new Mitel phone in the break room of a hotel. The extension is 355.

It's located at Bay 2, Slot 3 and Circuit 10.

How do I find that on the 66 block?

There are 4 Mitel bays / units total stacked on top of each other

I traced the 25 pair / Amphenol to the 66 block coming out of the back of the 2nd unit / bay (slot 3-4) - now how do I locate circuit 10 where the extension lives?

[acejavelin]

It's the 23rd pair of the cable for the ...

In the EL cabinets, as you have discovered already, amphenol cables cover 2 slots in Even/Odd pairs, Slots 2&1, Slots 4&3, Slots 6&5, and Slots 8&7. The first 12 pair are for the second slot and the 13th pair (BK/GR) is skipped and the first card starts at the 14th pair. If these are ONS or DNIC cards it is consecutive, pairs 1-12 are ports 1-12 on the even slot and pairs 14-25 are the odd slot. With 6-port COV or LS/GS Trunk cards it skips every other pair (Port 1 is pair 1, port 2 is pair 3, port 3 is pair 5, etc) and with Universal cards it's a bit different.

The cabling chartscan be found in the SX-200 EL or ICP Technician's Handbook, which can be found pretty easily online.