Technical data

18 Appendix
138
ARGUS 3u plus/3u NT
CONN ACK CONNect ACKnowledge Message
CR Call Reference
CT Call Transfer
CUG Closed User Group
CW Call Waiting
Call waiting
DAD Destination Address (1TR6)
DDI Direct Dialling In
Direct dialling in to an extension on a PBX
DISC DISConnect Message
DM Supplementary services (Dienstmerkmal)
DTMF Dual Tone Multi Frequency
EAZ Terminal Ident. No.
(Endgeräteauswahlziffer - 1TR6)
ECT Explicit Call Transfer
Call transfer or directed call forwarding
E-DSS1 European Digital Subscriber Signalling
System Number 1
GBG Closed user group (CUG) (Geschlossene
Benutzer Gruppe)
HLC High Layer Compatibility
HOLD Call Hold
Hold
ISDN Integrated Services Digital Network
INFO INFOrmation Message
LAPD Link Access Procedure for D-channels
channels
LCN Logical channel number
Channel number in X.25
LLC Low Layer Compatibility
MCID Malicious Call Identification
MSN Multiple Subscriber Number
NSF Network Specific Facilities
NT Network Termination
OAD Origination Address (1TR6)
PD Protocol Discriminator
REL RELease Message
REL ACK RELease ACKnowledge Message
REL COMPL RELease COMPLete Message
SCI Sending Complete Indication
SIN Service Indicator (1TR6)
SUB Sub-addressing / Sub-addressing is
possible