Physical Characteristics; Application - Meridian Nortel 1 Option 11C Technical Reference Manual

Table 119
Electrical characteristics (Part 2 of 2)
Characteristic
Low DC loop resistance dur-
ing outpulsing
High DC loop resistance
Line leakage
Effective loss

Physical characteristics

Application

DID Trunk
N/A
N/A
Equal to or greater than 30
kS (Tip to Ring, Tip to GND,
Ring to GND).
See pad table
In Option 11C systems the NT8D15 E&M Trunk Card is installed in slots 1
through 10 of the Main cabinet, or in slots 11 through 50 of the Expansion
cabinets.
In Option 11C systems equipped with Meridian Mail, the Universal Trunk
line card cannot be installed in slot 10 of the main cabinet.
Each card provides four circuits. Each circuit connects with the switching
system and with the external apparatus by an 80-pin connector at the rear of
the pack.
Each trunk circuit on the card connects to trunk facilities by tip an ring leads
which carry voice, ringing, tone signaling and battery. Trunk option selection
is determined by software control in LD 14.
The optional applications, features and signaling arrangements for each trunk
are assigned through unique route and trunk data blocks. Refer to the
Features and Services (553-3001-306) for information about assigning
features and services to trunks.
NT8D15 E&M Trunk Card
Option 11C and 11C Mini
Page 395 of 544
CO trunk
300 ohms
Ground start equal to or
greater than 30 kS. Loop start
equal to or greater than 5 MS
Equal to or greater than 30
kS (Tip to Ring, Tip to GND,
Ring to GND)
See pad table
Technical Reference Guide