User's Manual

3CC12426AAAA TQ BJA 01 Issue 01 - April 2001 - Draft 04 217/346
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Note: The bit rates represent the bit rates used on the ATM access of the DBS.
Nota: Only one "cross-connection" may be sufficient to use all the capacity of an NT. In case of over-
flow, the 7390 LT displays an error message after the agent has rejected the IP link creation.
The agent checks that maximum bit rate on all the Ethernet ports is lower or equal than 15 Kbps.
That maximum bit rate on DS traffic of all Ethernet ports is lower or equal than 8512 Kbps.
That maximum bit rate on the US traffic of all the Ethernet ports is lower or equal than
7448 Kbps.
Note: A pair of coordinates of ATM cells (Vpi, Vci) is single. When creating the IP cross-connection, if
you define a pair already existing, an error message will inform you at the bottom of the window.
You can consult the list of the couples already defined, reserved to the IP cross-connections in
the list of the IP links § 4.13.2.1 – Presentation of the IP screen.
Note: Ethernet port 2 has a 32 bytes buffer (port 1 only 16). Also use this one for heavy bursty traffic.
4.13.2.4– Characteristics and traffic of an IP link
– IP cross-connection characteristics:
PHYSICALLY, EACH NT CAN ACCEPT A MAXIMUM TOTAL BIT RATE OF
15 MBPS FOR THE SUM OF THE DOWNSTREAM CHANNELS AND THE
UPSTREAM CHANNELS
To access the consultation of the characteristics of an IP link chosen from the list
of IP cross-connections, click on the button shown here (in the button bar of the IP
screen).
IP cross-
connection
characteristics
IP cross-
connection traffic
characteristics
VCL
characteristics
for voice
VCL
characterisics
for data