Installation guide

Synapse Installation Guide Back to Contents
Installation 26
Figure 8. Station Port (FXS) Door Phone Connection
Trunk Port (FXO) Door Phone Support
You can connect a Trunk Port (FXO) door phone to any one of the four Line (FXO) ports
on a Synapse SB67010 PSTN Gateway, as shown in Figure 9. The FXO door phone can
be configured to call either a single extension or a group of extensions (a Ring Group).
For more information about configuring an FXO door phone, see “Configuring a Trunk
Port (FXO) Door Phone” on page 83.
In Call Appearance mode, it is recommended to exclude the door phone line from the
Default Routing Priority for outbound calls on the WebUI Dial Plan Settings page. This
will prevent Desksets from using the door phone line for outbound calls. In any case, the
door phone should be connected to the last, or closest to last, line of the last Gateway
to limit the chance of the door phone line being seized for outbound calls.
In Line Appearance mode, by default the Door Phone line is excluded from automatic line
selection when users go off hook for regular outbound telephone calls.
Figure 9. Trunk Port (FXO) Door Phone Connection
ATA FXS 1 & FXS 2
FXS Door Phone
FXO Door Phone
Bypass Phone
PSTN Gateway #1
FXO Lines 1–4
PSTN Gateway #2
FXO Lines 5–8
PSTN Telephone Connections