Adding PRI trunks (GT01 & GT02 only)
FortiVoice Gateway Primary Rate Interface (PRI) carries multiple DS0 voice and data transmissions to your PRI service providers and through them to the outside world.
To view the PRI trunks, go to Gateway > PRI. The following table includes the GUI fields and descriptions.
|
GUI field |
Description |
|---|---|
|
Enabled |
Select to activate the trunk. |
|
Name |
The name of the trunk. |
|
Status |
The trunk statuses, including:
|
|
Type |
The trunk type: analog. |
To add a PRI trunk
- Go to Gateway > PRI.
- Click New.
- Configure the following:
GUI field
Description
Trunk Setting
Enabled
Select to activate the trunk.
Name
The name of this trunk. This is view only.
Display name
Enter your caller ID that will appear on the called phone, such as Example Company.
Number
Enter the phone number that will appear on the called phone.
Use this option to configure the T1/E1 span.
Spans represent trunks (spans) of T1/E1 PSTN lines. The FortiVoice unit supports T1/E1 lines according to the installed voice card. You can add a span name using the CLI.
Edit span
Select the span you want to modify and click the Edit icon.
For more information, see Configuring the T1/E1 span.
Span
Use this option to configure the PRI trunk.
Select a span in the Available field and click -> to move it into the Selected field.
Max channel
Indicates the total number of B channels of the spans.
Max outgoing channel
Enter the number of outgoing channels out of the maximum number of B channels.
Phone Number
Click New to add the phone number provided by your PSTN service provider. Your PSTN service provider will direct calls from external callers directly to this number. You can add multiple numbers.
- Click OK.
Configuring the T1/E1 span
You can configure the settings of the T1/E1 span, including full or fractional PRI (T1/E1), to match the same settings of your PSTN service provider.
|
For GT02, if a PRI trunk includes two spans, the configuration of the second span is much simpler as the spans share many configurations. |
For more information, see Hardware Property.
To configure the T1/E1 span
- Go to Gateway > PRI.
- Select a span name and click Edit.
- For Edit span under Hardware Property, select a span and click the Edit icon.
- Configure the following:
GUI field
Description
Standard Options
Name
The name of this span. This is view-only.
Select the span type: PRI T1 or PRI E1.
A T1 span usually supports 23+1 channels, while an E1 span supports 30 channels in CAS (Channel Associate Signaling) mode and 30 B channels and one D channel in ISDN mode.
Select the signaling type of the ISDN PRI:
- PRI signalling, CPE (Customer Premises Equipment) side
- PRI signalling, Network Side
- PRI R2 signalling
Advanced Options
Framing and coding options
Specify the type of framing and coding to provision the PRI with your PSTN service provider.
Clocking options
Select the FortiVoice unit’s clock synchronization:
- Clock sourcing from PSTN network
- Internal clocking source
This option does not need to match that of your PSTN service provider.
Receive sensitivity
Select the level of receiver sensitivity. The receiver sensitivity is the ability of the phone receiver to pick up the required level of phone signals to make it operate more effectively within its application.
This option does not need to match that of your PSTN service provider.
D-channel signalling format
Select a signalling method for the D channel which is a signalling channel and carries the information needed to connect or disconnect calls and to negotiate special calling parameters (for example, automatic number ID, call waiting, data protocol). The D channel can also carry packet-switched data using the X.25 protocol.
Line build out
Select the line build out (LBO).
LBO settings are an inherent part of T1 and T3 network element transmission circuitry.
Since cable lengths between network elements and digital signal cross-connect (DSX) vary in the central office, LBO settings are used to adjust the output power of the transmission signal to achieve equal level point (ELP) at the DSX.
D-channel
By default, depending on your selection of Type, the typical channel numbers are:
- Full T1: 24
- Full E1: 16
You can also set the channel numbers to others such as 1.
The settings you configure must match the same settings of your PSTN service provider.
B-channel
By default, depending on your selection of Type, the typical channel settings are:
- Full T1: 1-23
- Full E1: 1-15, 17-31
You can also configure the fractional channel numbers. For example, for T1/E1, the channels can be:
- 1-12
- 2, 3, 4, 9-15
- 2-4, 9-15
The settings you configure must match the same settings of your PSTN service provider.
PRI R2 Setting
Since there is no single signaling standard for R2, the FortiVoice Gateway addresses this challenge by supporting many localized implementations of R2 signaling.
This option is active only if you select PRI R2 signalling for Signalling.
Country
Select the country for PRI R2 settings.
Max ANI digits
Automatic Number Identification (ANI) is a system used by telephone companies to identify the Directory Number (DN) of a calling subscriber. It allows subscribers to capture or display a caller’s telephone number.
Enter the number of digits of a caller‘s phone number to capture.
Max DNIS digits
Dialed Number Identification Service (DNIS) is a service provided by telephone companies that lets the subscribers determine which telephone number was dialed by a caller.
Enter the number of digits of a dialed call to be sent by the telephone company.
Caller category
Select the caller type.
Incoming digits mode
Select the incoming digits mode by consulting your telephone company.
DMTF option
DTMF dialing
Select to enable dual-tone multi-frequency signaling (DTMF) dialing.
DTMF answering
Select to enable dual-tone multi-frequency signaling (DTMF) answering.
Allow collect calls
Select to allow collect calls.
MF timeout
To enable the multi-frequency (MF) timeout, enter a value in milliseconds.
The default is -1, which disables the setting.
Metering pulse timeout
To enable the metering pulse timeout, enter a value in milliseconds.
The default is -1, which disables the setting.
- Click OK.