Panasonic KX-TDA600 Feature Manual page 236

1.13 P
[CO Line Call to an Extension Not Answered, Forwarded to Mailbox (Extension Number Method)]
PBX-1
Mailbox 101
Extn.
Mailbox 201
101
Mailbox 202
VPS
[Explanation]
Extension 201 does not answer the CO line call, so the call is forwarded to the VPS, and answered by
mailbox 201. If the outside caller leaves a message, the VPS sends a Message Waiting notification to the
extension using Enhanced QSIG information over the private network.
When forwarding the call, PBX-2 sends any received call information (Caller ID number/name, etc.) along
with the VM trunk group number to use, applicable time mode, and extension number and forwarding reason
of the original destination extension to PBX-1 as Enhanced QSIG information.
236 Feature Manual
Telephone Company
PBX-2
Private network
Mailbox 201:
"Hello. I am not at
my desk right now."
Extn. 201
Fwd to VPS
Outside Caller
TIE Line Network
PBX-3
PBX-4
PBX-5
PBX-6
PBX-7
PBX-8
Extn.
202