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NDA-24305 CHAPTER 6
Page 285
Revision 1.0
Q-SIG (CIRCUIT SWITCHED BASIC CALL - ETSI VERSION)
Q-4 Q-SIG (CIRCUIT SWITCHED BASIC CALL - ETSI VERSION)
1. General Description
This feature enable NEC’s PBX to connect to NEC’s PBX or other manufacturer by using Layer 3 protocol for
the signaling for the support of circuit mode bearer services at the Q reference point.
Q-SIG conforms to ETS 300 172.
Note 1:
ETS 300 172= Private Telecommunication Network (PTN);
Inter-exchange signaling protocol
Circuit mode basic service
PBX PBX
PRT
Q-SIG
(Private ISDN)
PRT