Lucent Technologies Definity Enterprise Communication Server 8.2 User Manual

Page of 1707
DEFINITY ECS Release 8.2
Administrator’s Guide  
555-233-506  
Issue 1
April 2000
Screen reference 
969
Trunk Group 
17
Group Type
Enter the type of trunk group.
Valid entries
Usage
Access 
Use access trunks to connect satellite switches to the main 
switch in Electronic Tandem Networks (ETN). Access trunks 
do not carry traveling class marks (TCM) and thus allow 
satellite callers unrestricted access to out-dial trunks on the 
main switch. Allows Inband ANI.
APLT
Advanced Private Line Termination (APLT) trunks are used in 
private networks. APLT trunks allow inband ANI.
CAMA
CAMA trunks route emergency calls to the local community’s 
Enhanced 911 systems.
CO
CO trunks typically connect your switch to the local central 
office, but they can also connect adjuncts such as external 
paging systems and data modules.
CPE
Use CPE trunks to connect adjuncts, such as paging systems 
and announcement or music sources, to the switch.
DID
Use DID trunks when you want people calling your 
organization to dial individual users directly without going 
through an attendant or some other central point. Allows 
Inband ANI.
DIOD
DIOD trunks are two-way trunks that transmit dialed digits in 
both directions. In North America, use tie trunks for 
applications that require two-way transmission of dialed digits. 
Allows Inband ANI.
DMI-BOS
Digital Multiplexed Interface – Bit-Oriented Signaling 
(DMI-BOS) trunks allow communication with systems using 
DMI-BOS protocol. DMI-BOS trunks allow inband ANI.
FX
An FX trunk is essentially a CO trunk that connects your 
switch directly to a central office outside your local exchange 
area. Use FX trunks to reduce long distance charges if your 
organization averages a high volume of long-distance calls to a 
specific area code.