DVG-5121SP User’s Manual
D-Link Corporation
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3-3. Telephone Interface Description
Connecting the DVG-5121SP to the phone sets
After connecting telephone sets to the Phone 1 and Phone 2 FXS ports, each set acts as an independent IP line
that is provided by the applied SIP server.
Connecting the DVG-5121SP to the PSTN/PBX
The Life Line port is a PSTN/ PBX <FXO> interface that connects to your telephone line for normal PSTN calls.
The Life Line port is only a back up solution enabled automatically when the network or SIP phone fails.