BRI Trunk Settings

When you configure a BRI trunk, you may need to configure some of the advanced settings. This reference describes all the settings on a BRI trunk.

BRI Trunk Basic Settings

Navigation path: Settings > PBX > Trunks, edit a trunk on the Basic tab.

Option Description
Name Give this trunk a name to help you identify it.
Signaling Specify the signaling type according to the direction provided by your service provider.
Signaling Role
Specify whether this interface will act like the user or the network.
  • User
  • Network

If the service provider acts as the network, the PBX needs to be set as the user.

If the service provider acts as the user, the PBX needs to be set as the network.

Switch Type

Configure the switch type according to the direction provided by your service provider.

BRI Trunk Advanced Settings

Navigation path: Settings > PBX > Trunks, edit a trunk on the Advanced tab.

Option Description
Echo Cancellation

This option enables or disables echo cancellation.

Codec

Choose the codec for this trunk.

Facility-based ISDN Supplementary Services

Decide whether to enable transmission of facility-based ISDN supplementary services (such as caller name from CPE over facility) or not.

Overlap Dial

Define whether the system can dial this switch using overlap digits or not. If you need Direct Dial-in, then enable this option.

Reset Interval

This sets the time in seconds between restart of unused B channels. Set the internal to Never if you don't like the channel to restarts.

PRI Indication Select the PRI Indication:
  • Inband: Use in-band tones to play busy or congestion signal to the other side.
    Note: Inband is not available on all PRI/BRI subscription lines.
  • Out-of-Band: Use RELEASE, DISCONNECT or other messages with CAUSE to indicate call progress (e.g., cause: unassigned number or user busy).
Carrier Hangup Tone Detection
  • Check this option: You will hear the hangup tone played by your carrier when the other party hangs up.
    Note: First check with your carrier whether they will send the prompt or not.
  • Uncheck this option: You will hear the hangup tone played by the system when the other party hangs up.
Hide CallerID

Whether to hide caller ID or not.

Enable DNIS

Dialed Number Identification Service is a telephone service that enables a company to identify which telephone number was dialed. Users could configure DNIS to allow the IP phones to display which trunk is passing the call.

DNIS Name

A name for this DNIS, when a call reaches the selected trunk, the name will be displayed on the ringing phone.

DID Number This number is used to identify which line of the trunk is passing the call.
Ignore Remote Hold Indications If you wish to ignore remote hold indications and use PBX's Music on Hold, enable this option.

Dialplan

Navigation path: Settings > PBX > Trunks, edit a trunk on the Advanced tab.

Option Description
Calling Party Numbering Plan

Select the Calling Party Numbering Plan.

Calling Party Numbering Type

Select the Calling Party Numbering Type.

Called Party Numbering Plan

Select the Called Party Numbering Plan.

Called Party Numbering Type

Select the Called Party Numbering Type.

Presentation Indicator

The PI provides instructions on whether or not the provided calling line identity is allowed to be presented, or indicate that the number is not available.

Screen Indicator

The SI provides information on the source and the quality of the provided information.

ISDN Dialplan

ISDN/telephony numbering plan (Recommendation E.164)

International Prefix

Dialplan: '(Remote Dialplan:ISDN +) Remote Number Type: international'.

National Prefix

Dialplan: '(Remote Dialplan:ISDN +)Remote Number Type:national'.

Local Prefix

Dialplan: '(Remote Dialplan:ISDN +)Remote Number Type:subscriber'.

Private Prefix

Dialplan: 'Remote Dialplan:private + Remote Number Type: subscriber'.

Unknown Prefix

Dialplan: '(Remote Dialplan:ISDN +)Remote Number Type:unknown'.

Adapt Caller ID

The incoming caller ID that matches the adaptation pattern will be adapted, so that you can press the call record directly on your phone call back a number.

For more information, see Change Inbound Caller ID.

Navigation path: Settings > PBX > Trunks, edit a trunk on the Adapt Caller ID tab.

Settings Description
Patterns The following characters have special meanings:
  • X matches the numbers 0- 9;
  • Z matches the numbers 1-9;
  • N matches the numbers 2- 9;
  • [12345-9] matches the numbers in the bracket (in this example, 1, 2, 3, 4,5, 6, 7, 8,

    9);

  • Wildcard matches one or more numbers. E.g. "9011." matches anything starting with 9011 (excluding 9011 itself);

  • Wildcard "!" matches none or more than one numbers. E.g. "9011T matches anything starting with 9011 (including 9011 itself);

Strip Strip allows you to specify the number of digits that will be stripped from the front of the Caller ID before the call is displayed. For example, if the incoming Caller ID is 05929999999, but you need to dial number 5929999999 to call back, one digit should be stripped.
Prepend These digits will be prepended to the Caller ID before the call is displayed. For example, if the incoming caller ID is 5929999999, but you need to dial digit 0 before the number to call back, 0 should be prepended.