|
gptkbp:instanceOf
|
gptkb:network_protocol
|
|
gptkbp:alsoKnownAs
|
gptkb:ISDN_D_channel_protocol
|
|
gptkbp:basisFor
|
gptkb:DSS1_protocol
gptkb:H.323_call_signaling
|
|
gptkbp:category
|
gptkb:ITU-T_recommendations
Telecommunication protocols
|
|
gptkbp:defines
|
messages for call establishment
messages for call release
|
|
gptkbp:firstPublished
|
1988
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Q.931
|
|
gptkbp:layer
|
gptkb:Layer_3
|
|
gptkbp:messageType
|
gptkb:PROGRESS
gptkb:CONNECT
gptkb:DISCONNECT
ALERTING
CALL PROCEEDING
RELEASE
SETUP
STATUS
STATUS ENQUIRY
|
|
gptkbp:operates
|
gptkb:D_channel
|
|
gptkbp:partOf
|
gptkb:ISDN
|
|
gptkbp:protocolStack
|
gptkb:ISDN_protocol_stack
|
|
gptkbp:publishedBy
|
gptkb:International_Telecommunication_Union
|
|
gptkbp:relatedTo
|
Q.921
|
|
gptkbp:standardizedBy
|
gptkb:ITU-T
|
|
gptkbp:supportsProtocol
|
signaling protocol
|
|
gptkbp:usedFor
|
call setup
call control
call teardown
|
|
gptkbp:usedIn
|
gptkb:ISDN_BRI
gptkb:ISDN_PRI
PBX systems
video conferencing
telephony
VoIP gateways
|
|
gptkbp:bfsParent
|
gptkb:H.323
gptkb:ITU-T
|
|
gptkbp:bfsLayer
|
5
|