# Connecting to an E1 network

This topic provides procedures for:

- Connecting a CG 6060 to an E1 120 ohm

- Connecting a CG 6060 to an E1 75 ohm

For information about the products available for connecting and terminating boards, refer to the Dialogic® Hardware Connectivity Manual.

Before connecting a CG 6060 board to an E1 network, ensure that you have:

- Specified NetworkInterface.T1E1[x].Type = E1 for the keyword value in the board keyword file.

- Specified NetworkInterface.T1E1[x].Impedance = G703_75_OHM, G703_120_OHM, or HIGH_IMPEDANCE for the keyword value in the board keyword file.

- Specified the appropriate keyword values in the board keyword file for the following keywords:

NetworkInterface.T1E1[x].FrameType
NetworkInterface.T1E1[x].LineCode
NetworkInterface.T1E1[x].SignalingType

For more information, refer to Configuring the T1 or E1 interface.

Caution: | Dialogic obtains board-level approvals certificates for supported countries. Some countries require that you obtain system-level approvals before connecting to the public network. To learn what approvals you require, contact the appropriate regulatory authority in the target country.

The CG 6060 board has four CEPT E1 interfaces. For typical E1 communications, each E1 interface connects directly to an E1 trunk, as shown in the following illustration:

Trunks synchronize when the OAM API boots the board.

## Connecting a CG 6060 to an E1 120 ohm

Use a shielded RJ-48 cable to connect a CG 6060 board configured as 120 ohm to an E1 trunk.

If connecting Trunk 2 or Trunk 3, connect a dual T1/E1 120 ohm adapter cable to one or both MD1 RJ-45 interfaces on the board. Connect shielded RJ-48 cables to the trunk connectors on the splitter cables.

Caution: | Failure to use a shielded cable may negate the Class B approval. Refer to http://www.dialogic.com/declarations/default.htm for more information.

## Connecting a CG 6060 to an E1 75 ohm

Use an RJ-48C to 75 ohm BNC adapter cable or a Dialogic® MD1 RJ-45 to 75 ohm BNC adapter cable to connect a CG 6060 board configured as 75 ohm to an E1 trunk.