Nortel ISDN Signaling Link, Description, Installation And Operation

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Page 48 of 378 Description
553-3001-202 Standard 1.00 April 2000
Figure 9
ITG ISL Trunk card signaling paths
In Figure 9, the DS-30X connection is part of the Meridian 1 IPE shelf’s
backplane. The ISL DCH connection is a cable that runs from the “octopus”
breakout cable, on the back of the IPE cabinet, to one of the MSDL’s RS-422
ports. The Leader/Follower card messages normally travel over the T-LAN.
The DCHIP messages travel over the E-LAN: a 10BaseT LAN connected to
each ITG ISL Trunk card and the MAT PC. A separate 10/100BaseT LAN
transmits the voice/fax data to the remote VoIP systems.
P R I
P R I
P R I
P R I
Meridian 1
DS-30X
DS-30X
DS-30X
DS-30X
Leader/Follower
IP Messages
DCHIP/Follower
IP Messages
KEY
Timeslot port
connection (SSD)
ISL DCH
connection
ISL DCH
Follower
Follower
DCHIP
Leader
553-9476