
60 Chapter 2 System telephony networking overview
N0060606N0060606
•CLID set
• Auto privacy
• Answer mode
• Auxiliary ringer
• Full autohold
Some features are transparent to the user, but must be programmed to be activated. Others are
available for end-user programming at the telephone. Details about these features are given below.
Three party service
The Three Party Service allows a user, usually an operator, to take three-party conference by
calling two other parties from one telephone. Once the connection is made, the controlling party
can hang up, leaving the other two connected. They can even put one party on hold, and talk to the
other party.
If the original call is inbound to the BCM, any subsequent three-party conference will be
terminated when the BCM user drops out of the call.
For example, PSTN user A calls a BCM user.
After the call is established, the BCM user initiates a three-party conference with another PSTN
user. If the BCM user hangs up, the conference is closed and all parties are dropped from the call.
Following are the two rules:
Rule 1 - if the call is an inbound call, the BCM user can create a conference, but if they drop out,
the calls are all dropped.
Rule 2 - if the BCM initiates outbound calls to 2 parties, conferences them, the BCM user can drop
out leaving them connected.
This feature is designed to allow operators to assist in the connection of calls from one main
location.
Making a conference call
To initiate or disconnect from a conference call on a BCM system over DPNSS 1, use the
procedure described in the BCM 4.0 Device Configuration Guide (N0060600)
.
Note: BCM does not support Hold over the DPNSS link itself. This means
that the conferenced party on the distant end of the network cannot place a
Three Party Service call on Hold.
Note: Three Party Service is supported on model 7000 telephones, but in a
receive-only fashion. These telephone types cannot initiate Three Party
Service. For more information about these telephone types, see the BCM 4.0
Telephony Device Installation Guide (N0060609).
(model 7000 phones, supported in Europe only.)
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