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NDA-24305 CHAPTER 6
Page 291
Revision 1.0
Q-SIG (CIRCUIT SWITCHED BASIC CALL - ETSI VERSION)
(c) The connection patterns for the UUS transmission are shown in Figure 6-1.
Figure 6-1 Connection Patterns for UUS Transmission
Pattern 1: The ISDN tandem connection
Note:
Either ISDN(a) or ISDN(b) is Q-SIG/IS-11572 interface.
PBX PBX PBX
ISDN(a) ISDN(b)
Pattern 2: The interface used in the terminating office is Q-SIG/IS-11572.
Pattern 3: The interface used in the originating office is Q-SIG/IS-11572.
PBX PBX
PBX PBX
Q-SIG/
IS-11572
Q-SIG/
IS-11572
ISDN
terminal
ISDN
terminal
ISDN
message
(UUS)
ISDN
message
(UUS)
ISDN
message
(UUS)
ISDN
message
(UUS)
ISDN
message
(UUS)
ISDN
message
(UUS)