Lucent Technologies Definity Enterprise Communication Server 8.2 用户手册
DEFINITY ECS Release 8.2
Administrator’s Guide
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.
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.
private networks. APLT trunks allow inband ANI.
CAMA
CAMA trunks route emergency calls to the local community’s
Enhanced 911 systems.
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.
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.
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.
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.
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.
(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.
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.