Dial plans
The dial plan is the settings added to a specific gateway to enable the successful Fax Relay operation. Check the Equisys website for details on supported devices and how to configure that specific device.
For the Zetafax Server to process a Fax Relay transmission it requires a Device ID which is set using the dial plan in the router device used to connect the fax device to the network. Dial plans are rules used to modify phone numbers which are entered.
They are typically set independently for each device, and for each telephone port on a device (ie for each connected Fax Relay fax device). For Fax Relay, a typical dial plan is as follows:
Destination number entered |
Number passed to Zetafax Server |
Comment |
<4 digit code> * <6 or more digits> |
<4 digit code> * <digits> |
Relay from Zetafax User |
<4 digit code> |
<4 digit code> |
Network scan to Zetafax User Inbox |
<6 or more digits> |
<Device ID> * <digits> |
Anonymous send |
Other |
(none) |
Call not forwarded to Zetafax Server |
In this example the dial plan imposes rules that all User IDs are exactly 4 digits, and that external phone numbers are at least 6 digits long. Users entering numbers outside those ranges will get immediate feedback of their mistake – typically by hearing a “number unobtainable” tone.
As an additional check, the Zetafax Server can be configured so that it will reject calls with an invalid (unrecognised) User ID or Device ID without answering the call.
It is recommended that Device IDs are a different length from User IDs to help with identifying them in the Zetafax Configuration program – eg on a system using 4 digit User IDs then the administrator may use Device IDs which are 3 digits.