Nortel Meridian 1 Planning And Installation Manual page 319

Page 298 of 590
Figure 70
Attendant console connections
To 4th TN Tip
To 4th TN Ring
To 5th TN Tip
To 5th TN Ring
(Note 1)
Note 1: The M2250 is powered through the line circuits.
In addition to the primary TN, secondary TN and ASMTN, two TNs are cabled to
the M2250. Maximum loop length is 3000 ft (915 m) of 24 AWG (5.0 Metric Wire Gauge).
Note 2: When additional options are used (BLF) an additional 16V dc power supply is
required. The 16V dc source is cabled through +VPS and +VPS RTN leads. The maximum
distance from the console to the power source is 120 ft (36 m) of 24 AWG (5.0 Metric Wire Gauge) wire.
553-3021-209 Standard 1.00
Chapter 17 — Connecting the telephones
Console power can be
obtained from the
4th and 5th
TNs on the circuit card.
(Note 2)
+VPS RTN
July 1999
Cross-connect
block
W-BL
To 1st TN
BL-W
W-O
To 2nd TN
O-W
ASM/
W-S
To 3rd TN
ADN
S-W
R-O
O-R
R-G
G-R
BK-BL
GND
BL-BK
TC
Y-BL
+VPS
BL-Y
Y-O
O-Y
Relay 2 V-S
Relay 1 S-V
Console
connector
26
1
27
2
30
5
32
Cable to
7
M2250
33
Console
8
36
11
41
16
42
17
Cable from
console to
cross-connect
50
terminal
25
553-8352.EPS