ONE100D/M Chapter 4
Installation Guide Interface description
39
4.2 ISDN interface specifications
Specifications
• The ONE100D/M motherboard supports up to 4 ISDN interfaces. The interfaces.are of type NT. For
use as TE a crossed cable must be used.
• compliant with ITU-T I.430 section 10
• Connector: RJ45 connector, 1 connector per interface
• Cable to be used: shielded cable
• The factory configuration of these interfaces is T0 mode. Do not connect the interfaces with a public
ISDN access without ensuring that the strap positions are correct. The product can be irreversibly
damaged otherwise.
• You can connect/disconnect the power supply of all ISDN ports by using the command
CLI(voice-
port)# [no] power-source-one without changing the default factory strap settings.
• Cables connected to the T0/S0 (ISDN/BRI) interfaces must always be shielded, in order to respect
the environmental norm.
Mother board connectors
The following table shows the connector layout of the RJ45 ISDN connector:
Pin NT function Figure
1 not connected -
2 not connected -
3 Receive A (+) input
4 Transmit A (+) output
5 Transmit B (-) output
6 Receive B (-) input
7 not connected -
8 not connected -
To Next Page
Loading...
