2500 MMGL and 2500 YMGL Telephones

Distance Limitations

The maximum allowable distances of a 2500 telephone from the DEFINITY G1, G2, G3, System 75, or System 85 cabinet are shown in the table below.

 

 

NOMINAL MAXIMUM RANGE

SYSTEM

PORT BOARD

 

IN FEET (METERS)

 

 

 

24 AWG

26 AWG

SYSTEM 85

SN229

3,500

(1,067)

3,500

(1,067)

 

SN228B

15,000

(4,572)

9,000

(2,743)

DEFINITY G2

SN229

3,500

(1,067)

3,500

(1,067)

 

SN228B

15,000

(4,572)

9,000

(2,743)

 

TN742

20,000

(6,100)

13,000

(3,962)

 

TN746

3,100 (945)

2,000 (610)

 

TN746B

3,100 (945)

2,000 (610)

DEFINITY G1 & G3

TN742

20,000

(6,100)

13,000

(3,962)

SYSTEM 75

TN769

20,000

(6,100)

13,000

(3,962)

 

TN746

3,100 (945)

2,000 (610)

Power Requirements

Both 2500 telephones are powered by the tip and ring leads. These telephones do not require any external power supply.

Switch Administration

Both 2500 telephones must be administered in the following ways:

If the 2500 MMGL or 2500 YMGL telephone is connected to a System 75 or DEFINITY G1 or G3, it must be administered as a 2500 analog telephone.

If either of the 2500 telephones is connected to a System 85 or DEFINITY G2, it can be administered as an analog line.

Power Failure Operation

Both 2500 telephones can be used as an emergency station during power failure transfer condi- tions.

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