Nortel Networks M3110 User Manual
Page 72
Page 72 of 504
Attendant consoles
553-3001-367 Standard 3.00 August 2005
The following notes refer to Figure 17 on
, which illustrates the
M2250 attendant console cross-connections.
Note 1: The M2250 is powered by means of the line circuits. In addition
to the primary TN, secondary TN, and ASM TN, two TNs are cabled to
the M2250 using the +AUX and –AUX leads. The maximum loop length
is 3000 ft of 24 AWG wire.
Note 2: When additional options are used (BLF or display backlight
option), an additional 16 V DC power supply is required. The 16 V DC
source is cabled using +VPS and VPS RTN leads. The maximum
distance from the console to the power source is 120 feet of 24 AWG
wire. Please note: if both options are installed, only one 16 V DC power
supply is required.
Note 3: Nortel recommends that five consecutive TNs on the line circuit
be allocated for each console.
Note 4: When used with the ISDLC, the M2250 requires NT8D02 or
later.
Note 5: The third TN must be cross-connected to the console cable
WH/SL pair whether or not an ASM (Attendant Supervisory Module) is
installed. This third TN provides additional console power which is
required.
explains where each M2250 cable pair is connected.
lists the M2250 typical cross-connections.