Instruction manual

Page 1164 of 3156 Conference
553-3001-306 Standard 10.00 January 2002
Meridian 1 proprietary telephones require a separate Conference 3 or
Conference 6 key/lamp pair. M2317 and M3000 Touchphones establish
conference calls by means of a softkey. Analog (500/2500 type) telephones
use the switchhook to establish a three-party conference.
The six-party Conference (C6A) Class of Service enables analog (500/2500
type) telephones to establish a six-party conference, which operates the same
as a three-party conference, with the exception of Conference Control
operation.
Conference Control disconnects an unwanted third party (trunk only) from a
three-party conference. Analog (500/2500 type) telephone users implement
this feature by means of switchhook flash. Telephones with the six-party
conference capability implement Conference Control by dialing SPRE + 87.
It is recommended that all analog (500/2500 type) telephones have either the
three-party conference (C6D) Class of Service or the six-party Conference
(C6A) Class of Service to avoid confusion when using Conference Control.
Operating parameters
Due to the possibility of getting annoying noise (squealing, for example)
when two or more trunks are involved in a conference, it is strongly
recommended that no more that two trunks be involved in the process.
At least one party in the conference must be a telephone on the local
Meridian 1 for the duration of the conference call.
Attendant Administration does not support the implementation of six-party
conference for analog (500/2500 type) telephones. An error message is
displayed if an attempt is made to remove Transfer Allowed (XFA) Class of
Service for analog (500/2500 type) telephones with a C6A Class of Service.
A Transfer allowed (XFA) Class of Service is required for a three-party
conference (C6D) and is also a prerequisite for the six-party conference Class
of Service (C6A) on analog (500/2500 type) telephones.
Dial access of Conference Control is provided only for analog (500/2500
type) telephones with a C6A Class of Service.