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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-729ISDN-SGR (ISDN-PRI Signaling Group)
10
Figure 10-50. NFAS Duplex ISDN-PRI Over PACCON Signaling Group (24
Channel)
Packet Bus
Packet Bus
D-Channel
D-Channel
TDM Bus
Processor
(TN786)
Packet
Control
Circuit
Pack
(TN778)
UDS1
Interface
Circuit
Pack
(TN464*)
DS1/UDS1
Interface
Circuit
Pack
(TN464*)
UDS1
Interface
Circuit
Pack
(TN464*)
B-Channels
B-Channels
B-Channels
*TN464 C or later
Physical connection
Logical connection
ISDN-TRK
(B-Channel)
Voice or Data
(Port 1)
ISDN-TRK
(B-Channel)
Voice or Data
(Port 24)
ISDN-TRK
(B-Channel)
Voice or Data
(Port 1)
ISDN-TRK
(B-Channel)
Voice or Data
(Port 2)
ISDN-PLK
(D-Channel)
Primary Signaling
Link
(Port 24)
ISDN-TRK
(B-Channel)
Voice or Data
(Port 23)
ISDN-TRK
(B-Channel)
(Port 1)
ISDN-TRK
(B-Channel)
(Port 2)
ISDN-PLK
(D-Channel)
Secondary Signaling
Link
(Port 24)
ISDN-TRK
(B-Channel)
(Port 23)