NEC NDA-24305 - page 307

NDA-24305 CHAPTER 6
Page 289
Revision 1.0
Q-SIG (CIRCUIT SWITCHED BASIC CALL - ETSI VERSION)
5. Transparency
Note 1: When there is no c alled party numb er from ISDN, PBX may define the called party number.
Note 2: In the connection from Q-SIG to ISDN, PBX may add or delete digits of t he called party number.
Note 3: A digital data communication between CCIS and Q-SIG will be disconnected by High Layer if the at-
tribution mismatch.
Note 4: CCIS in this section means CCIS without ISDN transmitting information (ARTD CDN98 (CI)=0).
TYPE OF CALL MANDATORY INFORMATION ELEMENTS NON-MANDATORY INFORMATION ELE-
MENTS
Q-SIG Q-SIG Conforming to ETS 300 172 Conforming to ETS 300 172
ISDN Q-SIG
(1) Message Type
(2) Bearer Capability
(3) Called Party Number Note 1 Note 2
(4) Cause
(5) Call state
(1) Calling Party Number
(2) Calling Party Sub-address
(3) Called Party Sub-address
(4) Cause
(5) Progress Indicator
(6) Low Layer Capability
(7) High Layer Capability
CCIS Q-SIG
Note 3 Note 4 (1) Bearer Capability (Speech, Modem)
(2) Called Party Number (1) Calling Party Number
ACIS Q−SIG (1) Called Party Number (Speech, 3.1k) None
ISDN term Q-SIG
(1) Message Type
(2) Bearer Capability
(3) Called Party Number
(4) Cause information el ement
(5) Call state
(1) Calling Party Number
(2) Calling Party Sub-address
(3) Called Party Sub-address
(4) Cause
(5) Progress Indicator
(6) Low Layer Capability
(7) High Layer Capability
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