Tandem Co Line Connection (Trunk-To-Trunk) - Toshiba Strata DK14 General Description Manual

Tandem CO Line Connection (Trunk-to-Trunk)

Also known as Trunk-to-Trunk Connection, this feature connects a user to two CO lines in a
conference. A DKT that sets up a Tandem CO line connectino must have two CO line appearances
or the connection must be set up on a DN. After connection, the user can drop out of the
conversation leaving the two outside parties in an unsupervised conference. The CO lines remain
connected until one of the parties hangs up. Each CO line in the system can be enabled or denied
the Tandem CO Line Connection feature. Each system supports:
DK14 – two connections
DK40i – four connections (maximum)
DK424 – ten connections (maximum)
Amplified Conference
If the amplified conference option is installed and the amplifier is available, the Tandem CO Line
Connection is automatically amplified. A trunk-to-trunk connection (up to 10 at one time) is
established on each DNIS external network call.
Drop Out
On DK424 Release 3.2 and later versions, Tandem CO Line Connection – With Drop Out enables
standard telephones and Voice Mail/Auto Attendant ports to set up a conference with two CO lines
and then drop out of the conference leaving the two CO lines connected.
The station that sets up the two-line connection can reconnect to the tandem connection by dialing
a pickup code. If more than one tandem connection is set up by a station, the pickup code
reconnects that station to the tandem connection that has the lowest CO line number as a priority.
Prior to Release 3.2 software, standard telephones could set up two-line conferences, but they
could not drop out of the connection. The pickup code function applies only to the station that sets
up the tandem connection. A station cannot pick up a tandem connection which was set up by
another station.
Automatic Release from Hold
For loop start lines, Strata systems have an Automatic Release from Hold capability that provides
automatic disconnect. It recognizes the disconnect signal from the CO. If the CO does not provide
the disconnect signal (most do), the trunk-to-trunk conference must be monitored and released by
the station user who set it up. For ground start, DID or Tie lines handling the incoming trunk,
automatic release is accomplished from disconnect supervision.
Strata DK Feature Description 5/99
System Availability
Standard on Strata DK14/DK40i/DK424
Requirements
Two CO line appearances for the DKT, or
call set up on a DN
Features
System Features
103