# Gateway Trunk Descriptors (EX Controller)

## Purpose:

The Gateway Trunk Descriptors form allows you to configure the EX Controller's trunk-specific data and provide status information on the selected trunk. This form consists of two grids:

- The upper grid displays the list of available endpoints

- The lower grid displays the status information and the settings of the selected end point.

NOTE: This form is applicable only to the EX Controller.

Use this form when performing the following tasks:

- Change Gateway Trunk Settings

- E1T1 Auto Configuration

## Conditions

- This form supports the configuration of ISDN (PRI), R2 and E&M trunk types only. For LS trunks, only the link status (Up or Down) is displayed.

- If you change the Gateway Trunk Descriptor Endpoint Type, the EX Controller services are restarted and all the trunks are taken out of service.

## Field Descriptions

Parameter | Description | Default Value
Gateway Trunk Descriptors
Gateway | Read-only field. Indicates the IP address of the EX controller. | Not applicable
PLID | Read-only field. Indicates the Physical Location Identifier (PLID) of the selected end point. | Not applicable
Link State | Read-only field. Indicates the connection status (Up or Down) of the EX controller. | Not applicable
Line Type | Select a line type: For DS1 T-Carrier Signaling, select T1 For E1 E-Carrier Signaling, select E1 NOTES The T1 line type value is not valid if the Signaling field is set to R2. You must restart the system after you modify the Line Type for the changes to take effect. | E1
Signaling | Select the signaling protocol for the port: For Integrated Services Digital Network, select ISDN For E1-R2 CAS Signaling Protocol, select R2 For E&M CAS Signaling Protocol, select EAM NOTE: The R2 signaling type value is not valid if the Line Type field is set to T1. | R2
Endpoint Type | Select the endpoint type: For Terminal Equipment, select Te For Network Termination, select Nt | Te
Trunk Type | Read-only. Indicates the trunk type. |