AT&T 7200 series, 7500 series, 7100 series, 2500 series, 7400 series Direct Link DCS Connections

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-5

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(See chapter 9 for detailed permanent connection configurations. The DEFINITY Communications System System 75 and Generic 1.1 Implementation manual (555-204-654) and the DEFINITY Communications System System 85 and Generic 2 Feature Descriptions manual (555-104-301) provide permanent connection implementation details.)

When DCS signaling is channeled through a DS1 port, the signaling channel can be carried over the same DS1 facility as that which carries voice between the network nodes.

See AT&T Product Interfaces Reference — DEFINITY Communications System Generic 2.1 to Generic 1.1 with DCS for detailed procedures for establishing DS1 DCS channels using permanent connections.

TIE TRUNKS

SYSTEM 85

"DIMENSION" SYSTEM

FP8 (ISSUE 3)

	CALL	D
SWITCH		C
	PROCESSOR &
NETWORK		I
	MEMORY
		U

1DCIU LINK

2

3

4

5

6

7

8

1

D

2

C

3I

4U

CALL

PROCESSOR & MEMORY

SWITCH NETWORK

NODE 1

NODE 2

TIE		DCIU LINKS
TRUNKS
SYSTEM 85
				1		2
			D
	CALL				3
SWITCH			C
					4
	PROCESSOR &
NETWORK			I		5
	MEMORY				6
			U
					7
					8
	NODE 3

			TIE
DCIU/PI LINKS			TRUNKS
		SYSTEM 75
1
2	P	CALL	SWITCH
3		PROCESSOR &
	I		NETWORK
4		MEMORY
		ENDPOINT

TIE TRUNKS

Figure 6-3.Direct Link DCS Connections