AT&T 518-600-016 manual General Requirements for Modems

Power Supply

4 0 8 4 0 8 4 0 8 4 0 8 0 0 8 D

	PFT		PFT		PFT	PFT
	04		0 8		1 2	1 6	2 0
03			0 7		1 1	1 5	1 9
02		0 6		1 0		1 4	1 8
	01		0 5		0 9	1 3	1 7

08	1 6		2 4		32	36
07	1 5		2 3		31	35
06	1 4		2 2		30	34
05		1 3	2 1		29	33
04		1 2	2 0		28
03		1 1		1 9	27
02		1 0	1 8		26
01		0 9	1 7		25

D8W cord 1000' max.

RS-232-C (M25B)

	17’			max.
- - - - - - - - - - - - - -			/- - - - - - - - - - - -
		/
	M T D M			2 2 1 2 C
				Modem
	M T D M			2 2 1 2 C
				Modem

- - - - - - - - - - - - - - - - - - - - - -

Modem pool

D4BU to

Central Office line jack

MERLIN II System control unit

FIGURE 1-16 Connectivity of a modern pool on dedicated outside lines.

GENERAL REQUIREMENTS FOR MODEMS

Modems are an essential part of MERLIN II system features involving local and remote computer access. Any modem other than the 2212C used with system hardware should meet the following requirements to ensure proper operation under all conditions. Modem requirements differ according to applications. When planning the system, remember the various modem configurations such as a single modem for analog voice/data or modem pools. The planning information recorded on the individual Station Configuration forms should reflect the exact modem arrangement for each station.

1-58 System Connectivity