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Page 454 of 504 Appendix D: M2317 telephone
553-3001-367 Standard 3.00 August 2005
Dimensions and weight
The M2317 digital telephone has the following dimensions:
Excluding the power supply and the NT1F09AC Asynchronous Data Option
board, the M2317 weighs approximately 1.4 Kg (3 lb). With the Data Option
installed, the telephone, excluding power supply and data cable, weighs
approximately 1.56 Kg (3.5 lb).
Line engineering
The M2317 digital telephones operate to their full potential through twisted
pair wiring on transmission lines selected by the rules given in “Digital
telephones line engineering” on page 289 &c. The maximum permissible
loop length is 1067 m (3500 ft.) of 22 or 24 AWG or 760 m (2500 ft.) of 26
AWG standard twisted wire with no bridge taps or load coils.
The 1067 m (3500 ft.) loop length requires the use of a Digital Line Card
(DLC) or an Integrated Services Digital Line Card (ISDLC) NT8D02, or
later.
Power requirements
The M2317 digital telephone uses loop power for all circuits requiring +10 V.
To satisfy the power requirements for those circuits on a maximum loop, as
defined in “Digital telephones line engineering” on page 289, 60mA of
13.5 V DC must be available at the telephone. The line card must have
compatible voltage and source resistance to meet these requirements.
depth 226.5 mm (9 in)
width 272.0 mm (10.1 in)
height (front) 27.5 mm (1.1 in)
height (rear) 73.5 mm (2.9 in)