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274 Installation, Upgrades and Additions for Avaya CMC1 Media Gateways
Meanwhile, the data link interface (between the processor and the physical signaling link) is
provided by (or through) a TN799DP Control-LAN circuit pack. In some configurations, the
TN799DP passes the signaling information over a separate 10BaseT TCP/IP network (usually
via a hub). For use with 10BaseT, connect the appropriate pins of the I/O field to the hub, or use
a 259A connector and DW8 cable to connect directly to the data-network equipment. For
pinouts and diagrams, refer to the installation manual. In other configurations, the TN799DP
circuit pack carries signaling over point-to-point protocol (PPP) for subsequent inclusion (via the
switching fabric) in the same DS1 bit stream as the DSC voice transmissions.
For further information about DCS, refer to the following documents:
● AT&T System 75/85 Network and Data Services Reference Manual
● System 75 Application Notes Network Services
● Administration for Network Connectivity for Avaya Communication Manager
Add Circuit Packs
A TN464HP, TN767C, or TN760 DS1 circuit pack is required for PPP connections. A TN799C or
higher C-LAN circuit pack is also required.
Determine the port assignments of the circuit packs to be added.
If a C-LAN circuit pack is already in the system, you do not need a second C-LAN circuit pack
for DCS. If your system already has a C-LAN, skip the following Administer the Bus Bridge
section. You do not need to power down the cabinet to install any of these circuit packs.
Administer the Bus Bridge
To administer the bus bridge:
1. Type change system-parameters maintenance and press Enter.
2. On Page 2, Type y in the PKTINT 2 field.
3. Choose the port bandwidths or use the default and submit the form.
4. Verify the bus bridge LED is lit on the C-LAN circuit pack. This indicates that the packet bus
is enabled.
Test the Packet Bus and Control-LAN Circuit Pack
Type test packet port-network 1 long and press Enter. For more detail about these tests, refer
to the “test pkt command” section in Maintenance for Avaya DEFINITY Server CSI.