Call Transfer, Call Conferencing, And Bridged Line Calls - 3Com 3102 Manual

If the primary phone enables Forward to Voice Mail, calls ring once on
the primary and secondary phones, and then go to voicemail.
If the primary phone enables Call Forward Universal, calls to the
primary go to the Call Forward Universal destination immediately and
do not ring on the primary or secondary phones.
If a secondary phone enables Forward to Voice Mail or Call Forwarding
to another extension, these settings affect only calls to the secondary
phone extension. A bridged call rings on both the primary phone and
secondary phone.
If a call is ringing on the primary phone and the secondary phone, and
the primary phone user presses the Forward to Voicemail button, the
call is forwarded to primary phone's voice mailbox and the secondary
phone stops ringing.
If a call is ringing on the primary phone and the secondary phone, and
the secondary phone user presses the Forward to Voicemail button,
call will continue ringing on both phones.

Call Transfer, Call Conferencing, and Bridged Line Calls

Bridged calls can be transferred by either the primary phone or the
secondary phone. The primary phone user and secondary phone user can
also set up a conference with a bridged call.
If the primary phone is on a bridged call and presses the Transfer button,
the primary phone user hears a dial tone. The user can then enter a
telephone number to start attended or unattended call transfer. While
the primary phone user enters the phone number, the calling party is put
on hold. However, the light for BSA line on the secondary phone remains
on (does not blink as it would for a non-bridged call on hold).
While on a bridged call, the primary phone user can also press a free SA
line to transfer the call from a BSA line to a SA line. Or, a call connected
on a SA line can be transferred from the SA line to its BSA line. A
secondary phone user, however, can only transfer a call from an SA line to
BSA line but cannot transfer a bridged call to an SA line.
Both primary and secondary phones can set up a 3-way conference call
on a bridged line.
Enabling Bridged Extensions 111