Electrical Characteristics - Nortel Meridian 1 Option 11C Compact Technical Reference Manual

Electrical characteristics

Table 44
NTMW44 electrical characteristics
Characteristic
Terminal impedance
Signaling range
Signaling type
Far end battery
Near end battery
Minimum loop current
Ground potential difference
Low DC loop resistance
during outpulsing
High DC loop resistance
Line leakage
Effective loss
Chapter 12 — NTMW44 Universal Trunk Card
Table 43
Supported trunk type and signaling matrix
Loop start
Ground start
Loop dial
repeating
Loop OAID
Electrical characteristics of the NTMW44 are listed in Table 44.
DID trunk
600 or 900 ohm (selected by
software)
2450 Hz
Loop start
- 42 to - 52.5 V
N/A
N/A
+ 3 V
N/A
N/A
Equal to or greater than 30
kilohms (Tip to Ring, Tip to
ground, Ring to ground)
See PAD switching
Meridian 1 Option 11C Compact
CO/FX DID/
WATS DOD
yes no
yes no
no yes
no no
Page 117 of 136
Tie PAG
no no
no no
yes no
yes no
CO trunk
600 or 900 ohm (selected by
software)
1700 Hz
Ground or loop start
- 42 to - 52.5 V
- 42.75 to - 52.5 V
20 mA
+ 3 V
< 300 ohms
Ground start equal to or
greater than 30 kilohms; loop
start equal to or greater than 5
megohms
Equal to or greater than 30
kilohms (Tip to Ring, Tip to
ground, Ring to ground)
See PAD switching
Technical Reference Guide
RAN
no
no
no
no