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DISTRIBUTED COMMUNICATIONS SYSTEM (DCS) 6-11
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TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
DCIU
OR
MODEM
MODEM
RS449 RS449
RS449 TO RS232C CONVERSION
SIGNALING CHANNEL
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
DCIU
SN232
(TIE TRUNK)
ANN11
(DS1)
SN233
(TIE TRUNK)
ANN11
(DS1)
DCIU
ANALOG OR DS1 VOICE CHANNEL
RS232C
RS232C
GENERIC 2
WITH
UNIVERSAL
MODULE
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
GENERIC 2
WITH
UNIVERSAL
MODULE
DCIU
OR
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
Figure 6-12. Long Haul Analog Signaling: System 85/G2 to System 85/G2 Via Modem
ANN35
(PRI)
DCIU
SN270B
(DIGITAL
LINE)
SN270B
(DIGITAL
LINE)
DCIU
ANN35
(PRI)
ISDN PRI
RS232C TO
RS449 CONVERSION
GENERIC 2
WITH
UNIVERSAL
MODULE
SYSTEM 85 (R2V4)/G2
WITH
TRADITIONAL
MODULE
OR
TN754
(DIGITAL
LINE)
TN767
(PRI)
DCIU
RS449
MPDM
RS449
MPDM
SIGNALING CHANNEL
SYSTEM 85 (R2V4)/G2
WITH
TRADITIONAL
MODULE
*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
DCIU
OR
TN754
(DIGITAL
LINE)
TN767
(PRI)
Figure 6-13. Long Haul Digital Signaling: System 85/G2 to System 85/G2 Via ISDN PRI
RS449 RS449
SIGNALING CHANNEL
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
DCIU
SN232
(TIE TRUNK)
ANN11
(DS1)
DCIU
SN233
(TIE TRUNK)
ANN11
(DS1)
ANALOG OR DS1 VOICE CHANNEL
GENERIC 2
WITH
UNIVERSAL
MODULE
SYSTEM 85/G2
WITH
TRADITIONAL
MODULE
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
DCIU
OR
105A
IDI
GENERIC 2
WITH
UNIVERSAL
MODULE
DCIU
OR
TN760
(TIE TRUNK)
TN722
OR TN767
(DS1)
Figure 6-14. Short Haul Analog Signaling: System 85/G2 to System 85/G2 — Direct Via IDI (Isolating
Data Interface)