# Cabling a CG 6565E board

Before connecting a CG 6565E board to a T1/E1 network, ensure that you have specified appropriate values for the following keywords:

- NetworkInterface.T1E1[x].Type

- NetworkInterface.T1E1[x].Impedance

- NetworkInterface.T1E1[x].FrameType

- NetworkInterface.T1E1[x].LineCode

- NetworkInterface.T1E1[x].SignalingType

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

Caution: | Failure to use a shielded cable may negate your regulatory approval.

The T1/E1 network cable requirements vary based on the CG 6565E interface. The following table summarizes the network cabling for the CG 6565E board:

Interface | T1/E1 120 ohm cabling | E1 75 ohm cabling
Dialogic® MD1 Mini RJ-21 (up to 8 trunks) | Dialogic® MD1 Mini RJ-21 to Dialogic® MD1 RJ-21 cable connected to a signal entry panel or punchdown block. | Configure as E1 120 ohm. Connect a shielded 50-pin Telco cable to a signal entry panel or punchdown block. Connect the signal entry panel or punchdown block to a balun panel or equivalent to convert the impedance from 120 to 75 ohm.
Dialogic® MD1 RJ-45 (up to 4 trunks) | Dual T1/E1 120 ohm adapter cable connected to a shielded RJ-48 cable (or equivalent). | Configure as E1 75 ohm and use an Dialogic® MD1 RJ-45 to two 75 ohm BNC adapters cable.

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