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Configuring the Voice Settings
PSTN (LINE Port)
Cisco SPA232D Administration Guide 125
4
VoIP Fallback to PSTN section
FXS Port Polarity Configuration
PSTN (LINE Port)
Use the Voice > PSTN page to configure the settings for calls through the LINE
(PSTN) port.
To open this page: Click Voice on the menu bar, and then click PSTN in the
navigation tree. Enter the settings as described below. After making changes, click
Submit to save your settings, or click Cancel to redisplay the page with the saved
settings.
Field Description
Auto PSTN
Fallback
If enabled, the ATA automatically routes all calls to the
PSTN gateway when the Line 1 proxy is down
(registration failure or network link down).
Default setting: yes
Field Description
Idle Polarity Polarity before a call is connected: Forward or Reverse.
Default setting: Forward
Caller Conn
Polarity
Polarity after an outbound call is connected: Forward or
Reverse.
Default setting: Forward.
Callee Conn
Polarity
Polarity after an inbound call is connected: Forward or
Reverse.
Default setting: Forward
Field Description
PSTN Line Enable To enable this line for service, select yes. Otherwise,
select no.
Default setting: yes