1.20 T1 Line Service Features
Feature Guide 151
Conditions
• If a T1 line is used as a public line, the channel type depends on the contract with the telephone
company.
(4) OPX Off Premise
Extension (OPX)
A single line telephone (SLT) which is installed off site can perform
as if it were installed locally. The SLT makes and receives calls
through the PBX. An extension number can be given to the OPX,
and extension data such as Class of Service (COS) is also
applied.
[Example]
(5) ANI Automatic Number
Identification (ANI)
Receives the caller's number from a T1 line.
When the ANI number is received, it can be treated the same as
a Caller ID number. (→ 1.16.1 Caller ID)
Feature Description
Dials "103".
Extn.101
Extn.103
SLT
Telephone Company
T1-LCOT
T1 Card
T1-OPX
PBX
Extn.102
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