Allied Telesis AR400 series manual Connection to Isdn network, TNV1, TNV3

40 AR400 Series Router

Connection to ISDN network

This product is supplied with an approved patch cord for connection to the ISDN Basic Rate Network.

Ports for the connection of other apparatus

The following interfaces normally operate at Safe Extra Low Voltage (SELV) levels:

■asynchronous (console) ports

■Ethernet ports

■G703 ports

■synchronous ports

Note SELV is a secondary circuit whose voltages do not exceed a safe value under normal operating conditions and under single fault conditions. Under normal operating conditions the voltages do not exceed 42.4 V peak AC or 60 V DC.

TNV1

The following interfaces are Telecommunications Network Voltage (TNV1) circuits, which operate normally within the limits of SELV:

■BRI ports for connection to ISDN Basic Rate telecommunications networks

■PRI ports for connection to ISDN Primary Rate telecommunications networks

■E1/T1 ports for connection to E1/T1 services

Note A TNV1 circuit is a circuit which under normal operating conditions does not exceed the limits for SELV and on which overvoltages from telecommunication networks are possible.

TNV3

The following interface is a Telecommunications Network Voltage (TNV3) circuit, which operates normally in excess of the limits of SELV:

■xDSL ports for connection to xDSL services

Note A TNV3 circuit is a circuit which under normal operating conditions exceed the limits for SELV and on which overvoltages from telecommunication networks are possible.

613-000313 Rev C