1.19.1.6 Call Hold (HOLD)—by ISDN
Description
An ISDN call can be put on hold using the ISDN service of the telephone company, instead of the PBX
feature. This can be a part of a Call Transfer (CT)—by ISDN (→ 1.19.1.7 Call Transfer (CT)—by ISDN) and
Three-party Conference (3PTY)—by ISDN (→ 1.19.1.8 Three-party Conference (3PTY)—by ISDN). This
feature allows an ISDN call to be held, and a call to be made to another outside party using only one
communication channel of ISDN. A PT user can easily use this feature by pressing the ISDN Hold button.
Conditions
•
This feature complies with the following European Telecommunication Standard (ETS) specification:
–
ETS 300 141 Call Hold (HOLD) supplementary service.
•
ISDN Hold Button
A flexible button can be customised as the ISDN Hold button.
•
The availability of this feature is dependent on the contract with the telephone company.
•
The TRS/Barring feature is applied when making a call after activating this feature. (→ 1.8.1 Toll
Restriction (TRS)/Call Barring (Barring))
•
ARS cannot be applied to the call dialled after activating this feature. (→ 1.9.1 Automatic Route
Selection (ARS))
•
It is impossible to seize any other trunk during this feature.
Programming Manual References
PC Programming Manual
3.8.8 [2-6-1] Numbering Plan—Main—Features—ISDN Hold
3.10.5 [4-1-4] Wired Extension—Flexible Button—Type
3.10.13 [4-2-3] Portable Station—Flexible Button—Type
3.10.17 [4-3] DSS Console—Flexible Button—Type
PT Programming Manual
None
Feature Guide References
1.18.2 Flexible Buttons
1.19 Integrated Services Digital Network (ISDN) Service Features
Feature Guide
239