79
Chapter 7
PSTN access and analog devices
•PSTN access considerations on page 79
•Analog devices considerations on page 79
PSTN access considerations
Consider the following for PSTN access:
•PSTN access
To provide access to the SRG PSTN when the SRG is in local mode, or to be able to set up tandem dialing from the main office through the SRG to the SRG PSTN, one or more PSTN trunks must be configured on the system. See the Networking Configuration Guide
•Tandem calls
The SRG considers all calls coming in over the VoIP trunks as remote access calls, even though the VoIP pathway is a dedicated trunk to another closed system.
To allow tandem dialing from the main office to the SRG PSTN, or to allow redirected SRG IP telephones to use the SRG local PSTN, a remote access package must be
specified to provide access to the PSTN line pool. This procedure is covered in
Outgoing calls configuration on page 74.
•Manual- and auto-answer lines
If the trunk is configured as a
Enter the line pool access code and the dial string for the main office attendant telephone in the Redirect to field (Configuration > Telephony > Lines > Active Physical Lines).
If the line is an
Analog devices considerations
Consider the following for analog devices:
•Basic operation
Analog telephones and devices connected to the SRG always function as local telephones to the SRG. They can use the VoIP trunk to the main office using access codes or destination codes, if the VoIP trunk line pool is assigned to the device, but the main office does not have any settings or administration for these devices.
