AT&T DEFINITY 7200 series - Manual (Page 131)

DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-13
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*ONE OF THE 23 AVD CHANNELS IS USED FOR DCS SIGNALING:
THE REMAINING 22 CHANNELS CAN BE USED FOR VOICE PURPOSES.
GENERIC 2
WITH
UNIVERSAL
MODULE
MPDM
RS449
RS232C TO
RS449 CONVERSION
T1
USING AVD DS1* CARRIER
DCIU
SN270B
(DIGITAL
LINE)
ANN11
(DS1)
PI
TN722
OR TN767
(DS1)
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
OR
TN754
(DIGITAL
LINE)
TN722
OR TN767
(DS1)
DCIU
SYSTEM 75/G1
Figure 6-17. Long Haul Digital Signaling: System 75/G1 to System 85/G2 Via AVD DS1
TN767
(PRI)
DCIU
OR
TN754
(DIGITAL
LINE)
SYSTEM 75 (R1V3)/G1
*ONE OF THE 23 B-CHANNELS IS USED FOR DCS SIGNALING: THE REMAINING 22 CHANNELS CAN BE USED FOR VOICE.
GENERIC 2
WITH
UNIVERSAL
MODULE
MPDM
RS449
RS232C TO
RS449 CONVERSION
ISDN PRI
ANN35
(PRI)
DCIU
SN270B
(DIGITAL
LINE)
TN767
(PRI)
PI
SYSTEM 85 (R2V4)/G2
WITH
TRADITIONAL
MODULE
Figure 6-18. Long Haul Digital Signaling: System 75/G1 to System 85/G2 Via ISDN PRI