Technical information

Troubleshooting and Repair

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)

Table 9: E&M Trunk Summary

Signal

E&M Trunk PBX

Outgoing

E&M Trunk PBX

Incoming

Seize

M lead goes active (volt-

age is dependent on Type I

or Type V operation)

E lead goes active

Seize

Acknowledgmen

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

Immediate Dial - M

Lead stays idle. Incom-

ing Wink - M Lead tog-

gles active/idle

(Sheet 1 of 2)