## About the Service Processor Panel

The service panel consists of the Service Processor Panel and two I/O panels. This simplifies the cabling to the system. The Service Processor Panel provides the following connections:

- Modem connection
- Serial ports
- Power connections for expansion cabinets
- Ethernet and Fibre Channel (FC) connections for expansion cabinets
- An auxiliary port, AUX, to support an external modem for use if the system is used at a location where the telephone system does not support the internal modem.

The following diagram shows service panel with its I/O panels:

You make all cable connections through the service panel rather than to individual components of the system. When the system has expansion cabinets, the cabling between the cabinets is also handled through the service panels, as shown in the following figure:

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