Installation guide

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Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 3 Installing the IGX
Installing Voice Cards
The back slot line numbers correspond to the back slot number in which the BC-E1 card resides. Record
the back slot number of each line. These number are necessary for configuring the system after
installation is complete.
The next section describes a specialized version of data transmission service called TDM Transport. It
applies to older WANs not manufactured by Cisco.
TDM Transport on the CVM
This section describes how to plan for use of the Time-Division Multiplexing Transport
(TDM Transport) feature. Note that TDM Transport requires Model C firmware on all connected CVMs
or CDPs that use this feature. Refer to the Cisco WAN Switching Command Reference for a description
of the command parameters in related commands.
Before adding a bundled connection under TDM Transport, consider the following:
• If a connection uses a T1 trunk, use the cnftrk command to configure the line coding for B8ZS
instead of ZCS.
• Add the least number of bundled connections to create the data channels.
• The longest delay for a connection determines the end-to-end delay for the entire transparent circuit
through the network.
• The maximum network delay is the sum of maximum queuing delays for the trunk cards over which
an individual connection is routed. The maximum network delay for a high-speed data connection
is 45 ms. Specify this limit using the cnfsysparm command.
• The total delay for a connection is defined as the sum of the propagation and trunk queuing delays.
The total delay for a connection cannot be more than 25 ms different from the total delay for any
other connection on the same card. The user is responsible for configuring the connections so that
no difference between total delays exceeds 25 ms. If the 25 ms is exceeded, an error message is
generated in the form CC0700d6, where CC is the slot number.
• In Switch Software Release 8.2, add the connection using the addcon command 7/8 coding, even
though the system internally uses 8/8 coding. This causes the system to reserve the additional
bandwidth required for the TDM Transport feature.