Figure 17: E&M Trunk - Type V (4-Wire); Table 9: E&M Trunk Summary - Mitel SX-200 EL Technician's Handbook

Type V
Type V is used in applications where short distance direct back-to-back
operation is desired. The M-lead invert is required at both ends.
Figure 17: E&M Trunk - Type V (4-wire)
Signal
Seize
Seize
Acknowledgment
Table 9: E&M Trunk Summary
E&M Trunk PBX
Outgoing
M lead goes active (voltage
is dependent on Type I or
Type V operation)
Immediate Dial - E Lead
stays idle. Outgoing Wink -
E Lead toggles active/idle.
Delay Dial - E Lead goes
active following M; goes idle
when ready to go
Troubleshooting and Repair
E&M Trunk PBX
Incoming
E lead goes active
Immediate Dial - M Lead
stays idle. Incoming Wink -
M Lead toggles active/idle
(Sheet 1 of 2)
79