AT&T DEFINITY 7200 series - Manual (Page 128)

6-10 DISTRIBUTED COMMUNICATIONS SYSTEM (DCS)
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RS232C MALE/MALE CABLE
SYSTEM 75/G1 SYSTEM 75/G1
SIGNALING CHANNEL
ANALOG OR DS1 VOICE CHANNEL
MTDM
MPDM
DCP DCP TN764
(DIGITAL LINE)
PI
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
TN764
(DIGITAL LINE)
PI
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
Figure 6-10. Short Haul Digital Signaling: System 75/G1 to System 75/G1 — Direct Via MPDM or
MTDM
System 85 or Generic 2 (G2) to System 85 or G2
RS449 TO RS232C
CONVERSION
RS449
RS232C
RS232C
DSU
DSU
OR
DCIU
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
GENERIC 2
WITH
UNIVERSAL
MODULE
ANALOG OR DS1 VOICE CHANNEL
SN233
(TIE TRUNK)
ANN11
(DS1)
DCIU
SN232
(TIE TRUNK)
ANN11
(DS1)
DCIU
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
SIGNALING CHANNEL
RS449
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
OR
DCIU
GENERIC 2
WITH
UNIVERSAL
MODULE
Figure 6-11. Short Haul Analog Signaling: System 85/G2 to System 85/G2 Via DSU