# C-LAN circuit pack

Classified Local Area Network (C-LAN) is a packet port circuit pack for Communication Manager. C-LAN provides TCP/IP connectivity to various accessories for applications. C-LAN has one 10BaseT or 100BaseT Ethernet connection and up to 16 DS0 physical interfaces for Point-to-Point Protocol (PPP) connections. You can integrate two modems to provide a remote PPP connectivity over an analog circuit. You can add multiple C-LAN circuit packs to a system to increase the TCP/IP capacity.

The C-LAN circuit pack provides data signaling over TCP/IP for Avaya one-X Agent. You can use the C-LAN circuit pack for My Computer, Office Phone, and Other Phone configurations, where the system connects the data to Communication Manager. The voice path does not use this circuit pack.
Note

Use C-LAN circuit packs that have the ability to handle the maximum number of active endpoints, for example, TN799C V4, TN799DP, or a later version. If you are using earlier versions, the system may encounter difficulties if the C-LAN circuit pack reaches the maximum number of active endpoints.

Parent topic: Communication Manager circuit packs
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