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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Screen reference
969Trunk 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.