Dependencies/Limitations
Subject Dependency/Limitation
CH Possible at multi-device connections only. In the case of PABXs, the connection is placed
on hold in the PABX. The information element is transmitted to the CO.
CH Non-ISDN extensions do not receive an advisory announcement (except that the extension
is placed on hold in the PABX).
CH A call can be placed on hold only in the active phase or during connection setup.
7.13.14 3PTY (Three Party Service / Conference)
Definition
A three-party conference is possible with multi-device connection. The conference status is indicated
at the relevant ISDN port.
On the extension side it must be ensured that the other participants in the conference are connected in
the system, i. e. only 1 B channel is required to the S
0
bus.
Model-Specific Data
Subject OfficePro OfficeCom OfficePoint OfficeOne
Feature available in x x x x
HW requirements S
0
module -
SW requirements As of Rel. 1.0 As of Rel. 1.0 As of Rel. 1.0 As of Rel. 1.0
CO feature x x x x
Extension feature x x x x
Dependencies/Limitations
Subject Dependency/Limitation
3PTY At multi-device connections only. In the case of PABXs, the conference is executed in the
PABX. The information element is transmitted to the CO.
7.13.15 Camp-On
Definition
If an extension is busy and a second call is pending, the busy extension receives the camp-on tone.
The camp-on status is transmitted to the CO. The busy extension has the option of answering the
waiting call.
Model-Specific Data
Subject OfficePro OfficeCom OfficePoint OfficeOne
http://cmweb01.mch.pn.siemens.de/e_doku/en/h150/h15/30/sh/2/15_713.htm (11 of 16) [06/04/2000 13:11:54]
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