Juniper Networks G10 CMTS manual Signals carried by the connectors are described in Table

Chassis

•	The modules in the card cage use the P1 through P5 connectors of the midplane (see Figure 9
•	on page 23). The power supplies use connectors PS1 through PS10. Fan trays and power
•	transition modules also connect to the midplane.
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•	Connectors P3 through P5 provide the pass-through interconnection between the modules in
•	the front and rear of the chassis. Connectors P1 and P2 support the cPCI bus. The major
•	signals carried by the connectors are described in Table 4.
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•Table 4: Midplane P1 – P5 Connectors

•	Connector	Function
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	P1 and P2	cPCI bus
•
	P3	I2C bus
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•		Ethernet to/from HFC Connector Module or SIM
•		Synchronization and reference clocks
•		Power and ground
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	P4 and P5	RF signals to HFC Connector Module or SIM
•
		IF signals from HFC Connector Module or SIM
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22 JUNOSg 3.0 G10 CMTS Hardware Guide