Alcatel-Lucent omniacces-voip gateway Manuel D’Utilisation
Voice Switching Daughtercard — Digital
Page 2-10
Cabling
Of the common cable types (compatible with RJ-45 jacks) that can be used with VoIP switches,
the Straight-Through (Ethernet) and Straight-Through (T1 Voice) are both acceptable, as well as
the Cross-Over (T1) cable; however, due to the TX/RX pinout wiring, the Cross-Over (Ethernet)
cable cannot be used with VoIP switches. If the Cross-Over (Ethernet) cable is used the LINK
LED will not display.
the Straight-Through (Ethernet) and Straight-Through (T1 Voice) are both acceptable, as well as
the Cross-Over (T1) cable; however, due to the TX/RX pinout wiring, the Cross-Over (Ethernet)
cable cannot be used with VoIP switches. If the Cross-Over (Ethernet) cable is used the LINK
LED will not display.
♦ Note ♦
For E1 configurations, it is recommended that a balun
connector always be used to connect a voice device
(e.g., PBX) that uses an ITU G.703 interface (coaxial
cables, BNC connectors) to a VSD (or any RJ-45 E1
port).
connector always be used to connect a voice device
(e.g., PBX) that uses an ITU G.703 interface (coaxial
cables, BNC connectors) to a VSD (or any RJ-45 E1
port).
The balun converts the impedance of 120 Ohms on the
RJ-45 port to 75 Ohms (G.723). The balun connector is
not required when both ends have RJ-45 connections.
Contact Alcatel’s customer support for more details on
balun connectors.
RJ-45 port to 75 Ohms (G.723). The balun connector is
not required when both ends have RJ-45 connections.
Contact Alcatel’s customer support for more details on
balun connectors.