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T1 Lines
338 ◆ Features DSX Software Manual
T1 Lines
Description
T1 lines require a unique T1 PCB (P/N 80061) and give the system a maximum of 24 lines in a single PCB
slot. The available T1 line types include:
❥ Loop Start (DTMF and Dial Pulse)
❥ Ground Start (DTMF and Dial Pulse)
❥ Direct Inward Dial (DID) Wink Start (DTMF and Dial Pulse)
❥ Direct Inward Dial (DID) Immediate Start (DTMF and Dial Pulse)
❥ E&M Tie Line Wink Start (DTMF and Dial Pulse)
❥ E&M Tie Line Immediate Start (DTMF and Dial Pulse)
T1 gives the system the advantages of advanced digital calling as well as conserving PCB slots. For exam-
ple, you can set up a system with 12 loop start lines, six tie lines, and six DID lines and use only a single
PCB slot. Additionally, the T1 PCB has its own on-board processor and DSP so it minimally impacts other
system resources.
Note: Although the T1 PCB can connect directly to the telco’s T1 smart jack, your telco may require that you
purchase and install a separate Channel Service Unit (CSU). This unit installs between the smart jack and
the T1 PCB.
ANI/DNIS Support
The system is compatible with telco's T1 Automatic Number Identification (ANI) and Dialed Number Infor-
mation Service (DNIS) services. ANI/DNIS services can be provided on T1 loop start, ground start, and DID
lines (but not E&M). ANI/DNIS Compatibility provides:
❥ Selectable Receive Format
You can set up the system for compatibility with any combination of ANI, DNIS and Dialed Number
(Address) data provided by the telco.
❥ Flexible Routing for DID Lines
For DID lines, the system can route the incoming call based on the received DNIS data and the entries
stored in the DID Translation Table. See Direct Inward Dialing (page 99) for more.
❥ Caller ID
The system can use the received ANI data to display the caller’s number on the called extension’s dis-
play. The ANI data can be up to 10 digits long.
FSK Caller ID
The T1 PCB can also receive FSK-based Caller ID (if provided by the telco), the same as the COIU (analog)
line cards. To receive this type of Caller ID, you must enable DSP Caller ID for the T1 line circuits in pro-
gramming. See the Programming below for more.
E1 Lines
The T1 PCB also supports E1, which provides 30 digital line circuits. E1 lines are not available in North
America.
Conditions
• None
Default Setting
• Disabled
In DSX-80/160, provides for connection to advanced digital lines and simplifies installation.