The Unit Capabilities (Operating More Than One Handset) - Panasonic KX-TG4000B Operating Instructions Manual

The Unit Capabilities
This unit can handle up to 4 external telephone lines which are provided by
a telephone company, or up to 2 internal lines for intercom calls.
You can expand the unit capabilities by registering up to 8 cordless
handsets at the base unit (p. 19, 52).
How many external calls and intercom calls can be
conducted by how many users at one time?
Allows four external calls simultaneously with the base unit and 3 handsets
(or with 4 handsets).*
External call on Line 1
OR
Allows two intercom calls while simultaneously conducting one external
call with the base unit and 4 handsets.* For example, 2 pairs of handsets
are engaged in separate intercom calls while the base unit is engaged in
an external call.
Intercom call 1
Allows three external calls while simultaneously conducting one intercom
call with the base unit and 4 handsets.* For example, the base unit and
two handsets are engaged in separate external calls while another handset
is engaged in an intercom call with another handset.
External call on Line 1
*
The number of cordless handsets that can be used simultaneously will vary
depending on usage of external telephone lines and internal lines, and usage of
mailboxes (p. 55).
In the above three cases:
All other handsets are in the standby mode.
The base unit and handset users can check the mailboxes for messages instead
of having external calls (p. 67, 70).
(Operating More than One Handset)
External call
on Line 2
Intercom call 2 External call on
Line 1, 2, 3 or 4
External call External call
on Line 2 on Line 3
External call External call
on Line 3 on Line 4
Intercom call
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