Nortel Meridian 1 Manual page 42

Page 30 of 224 Attendant consoles
553-3001-215 Standard 10.00 June 1999
The following notes refer to Figure 13, which illustrates QCW and M1250
attendant console cross-connections. For a listing of the QCW and M1250
attendant console cross-connections, see Table 4.
Note 1: Attendant consoles require 24 V of power. Attendant consoles
equipped with the QMT3 module require 15 V of power in addition to
the 24 V power supply.
Note 2: You can obtain 24 V of power from the following:
— 24 V transformers located within 25 ft (7.7 m) of the console. A
separate transformer is required for each attendant console.
— QUT1 or QUAA1 centralized power supply. A separate fuse is
required for each attendant console.
— Two circuits with a maximum loop resistance of 300 ¾. This
cross-connection must not be used if the power is obtained from a
source other than the Meridian 1 line circuit.
Note 3: (M1250) Connect to a solid ground (not the Meridian 1 system
ground). The maximum distance between the ground source and the
attendant console must be less than 200 ft (61 m). Run the ground
directly to the console cable connector if the connection through the
cross-connector exceeds 200 ft (61 m).
Note 4: When the BLF/CGM option is used on the M1250, an
additional 16 V dc power supply must be cabled through the +VPS (pin
16) and the +VPS RTN (pins 42 and 17) wires. The maximum loop limit
from the attendant console to the connector is 120 ft (36 m) at 24 AWG.