Specifications

54 Digital Family Features
Traveling Class of Service
Trunk attendant ring
Trunk interdigit
Trunk seizure
Wait for next character
Waiting tone timeout
TAPI (Telephone Application Programming Interface)
See Section 7, DIGITAL KEY BX, DIGITAL 400 and
DIGITAL 1000 Computer Telephony Integration, above.
Tenant service
A number of features of the DIGITAL family of
systems, such as call queues, call routing, access
restriction, intercom restriction, etc., provide the system
with tenant service capabilities. Four independent tenant
groups may be configured, each with its own attendant
position, extensions, and outside lines.
T1/E1 carrier support
The digital trunk card provides the interface to a T1
carrier, the equivalent of 24 PCM trunks, or to an E1
carrier, the equivalent of 30 PCM trunks. Each one of
the 24 T1 channels can be utilized as either a digital
loop-start, ground-start, DID (Direct Inward Dialing),
or tie line trunk. The system supports E1 protocols R2
or R2-MFC. Each one of the 30 E1 channels can be
utilized as either a digital DID, DOD (Direct Outward
Dialing), or tie line trunk. Multiple carriers may also
be accommodated.
Tie lines
The DIGITAL systems provide E&M signaling for tie
lines. In conjunction with the DIGITAL systems'
networking software, this allows private networking
of DIGITAL systems, or interface to PBX tie lines. A
network of DIGITAL systems can also be established
using T1/E1 or ISDN PRI lines.
Time setting station
One station in each system is defined to set the system
time and date, as it appears on the station display and
in the system.
Toll restriction (TLR)
To control costs by restricting unauthorized use of
office telephone facilities, calls initiated from certain
extensions and dialed on certain outside lines or outside
line groups may be restricted. The restrictions are based
on 32 allow or deny toll restriction tables, in which
specific dialed numbers (up to 31 digits long) are
permitted or denied. For example, on a station-by-
station basis, you may restrict access to all long distance
and international calls, or allow calls only locally and
to specific long distance or international numbers (for
example, customers or your organization's branch
offices).
Tone and pulse telephones
SLT extensions may be either impulse dial (type 500)
or DTMF (type 2500). Dialing from pulse SLTs can
be converted for outside dialing on DTMF trunks.
TSAPI (Telephone Services Application Programming
Interface)
See Section 7, DIGITAL KEY BX, DIGITAL 400 and
DIGITAL 1000 Computer Telephony Integration, above.
Trunk groups
Trunks defined in a group can be accessed by a single
code or dedicated button on the Avanti telephone set.
Up to ten trunk groups can be defined in the DIGITAL
KEY BX system, up to 32 in the DIGITAL 400 system,
and up to 64 in the DIGITAL 1000 system.
Trunk signal amplification
See Analog outside line volume control, above.