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2N
- ISDN BRI GSM Enterprise Gateway
9.6. Status Messages
ISDN Layer 1 Status Messages
ID Name
Description
0
DEACT
Deactivation – no signal received
1
ACTIVE
Activation – full synchronisation achieved (frame,multiframe,crc)
2
SIGNAL
Signal received – no synchronisation
3
SYNC
Signal received – only partial synchronisation (frame)
ISDN Layer 2 Status Messages
ID Name
Name
according to ITU-T Q.921
0
NOTEI
TEI Unassigned
1
AWTEI
Assigned Awaiting TEI
2
AWTEST
Establish Awaiting TEI
3
OKTEI
TEI Assigned
4
AWEST
Awaiting Establishment
5
AWREL
Awaiting Release
6
OKEST
Multiple Frame Established
7
TIMREC
Timer Recovery
ISDN Layer 3 Status Messages
ID Name
Name according to Q.931
Description on NT interface
Description on TE interface
0
NULL
Null
Rest status, ready for call
1
CINIT
Call Initiated
Call from BRI indicated
Call to BRI started
2
OVSEND
Overlap Sending
Gradual dialling receiving
Gradual dialling sending
3
OPROC
Outgoing Call Proceeding
Dialling from BRI terminated
Dialling to BRI terminated
4
CDELIV
Call Delivered
Call from BRI ringing
Call to BRI ringing
6
CPRES
Call Present
Call to BRI started
Call from BRI indicated
7
CRECV
Call Received
Call to BRI ringing
Call from BRI ringing
8
CONREQ
Connect Request
Call to BRI answered
Call from BRI answered
9
IPROC
Incoming Call Proceeding
Dialling to BRI terminated
Dialling from BRI terminated
10
ACTIVE
Active
Connected call
11
DISREQ
Disconnect Request
End of call from BRI
End of call to BRI
12
DISIND
Disconnect Indication
End of call to BRI
End of call from BRI
19
RELREQ
Release Request
Channel release request
25
OVRECV
Overlap Receiving
Gradual dialling sending
Gradual dialling receiving
61
RSTREQ
Restart Request
Channel restart request sent
62
RSTART
Restart
Channel restart request received
Management Status Messages
ID Name
Description
0
INIT
Initialisation upon BRI reset
1
IDLE
Activation – rest status, necessary for layers 2 and 3
2
DISC
Deactivation
87
Summary of Contents for ISDN BRI GSM
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