752 NT8D15 E and M Trunkcard
Figure 242
Signaling orientation for tandem connection betweenE and M and CO trunks
Outgoing calls are processed as follows:
•The M lead changes from ground to battery.
— If answer supervision is provided by the farend, there is a change
from open to ground on the E lead (ground detection).
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright© 2003-2008, Nor tel Networks
.