The Emergency Codes and PSTN Access Codes Settings are used to configure the emergency dial plan.
The Emergency Codes text field requires the PSTN numbers of the emergency or lifeline services. Multiple emergency codes can be inserted in this field separated by commas. For each emergency code, a routing pattern will be created in the Call Routing Table, which will allow faster and easier calls to emergency destinations.
The PSTN Access Code drop down list allows you to select the prefix code for accessing the PSTN line in the routing mode. Dialing the digits inserted in this text field will provide the PSTN dial tone when dialed from the handset.