ZyXEL Communications omni series user manual Connecting to Your Isdn Line, Interface Model

Connecting to Your ISDN Line

The omni comes with a choice of two types of ISDN line interfaces:

∙S/T interface - This can only connect to your NT-1 (Network Termination) device.

Warning: Do not under any circumstances connect directly to the ISDN wall jack.

∙U interface - This allows you to connect directly to your ISDN wall jack.

Warning: The ISDN jack is for ISDN line connection only. Connection of a phone line may result in damage to your Terminal Adapter.

Attention: La fiche ISDN est destinée uniquement pour la connexion sur une ligne RNIS. La connexion sur une ligne téléphonique peut endommager votre adaptateur de terminal.

U Interface Model

If you have purchased the U-interface model, you can connect the U-Interface directly to the wall jack.

In most cases, the ISDN jack installed by the phone company is a RJ-11 jack (except in Canada, where RJ-45 jack will be installed), and the U-Interface jack on the back of the omni is a RJ-45 jack. A RJ-45 to RJ-45 (or RJ-11 to RJ-45, depends on your regional distributor’s request) phone cable is included with your TA.

To connect your U-interface omni to your ISDN line complete the steps below:

∙Connect the RJ-45 connector to the “ISDN U” jack on the back of the omni.

∙Connect the other end of the RJ-45 cable (or RJ-11) to your wall jack.

12 Installing omni External Models