Cisco Systems 1010 manual self-timing based on a Stratum 4 level clock

Overview of the CES Port Adapter Modules

Figure 8-1 Typical CES T1 or E1 Port Adapter Module (UTP Port Shown)

H8803

		0		1	2
							3
S1			S1
						S1
S2			S2				S1
						S2
CD			CD				S2
						CD
CES E1	120Ω						CD

Each of the ports on the PAM can be configured to support the following clocking options:

•

•

self-timing based on a Stratum 4 level clock

loop timing from the received data stream—ideal for public network connections

•timing synchronized to a selected master clock port, required in order to distribute a single clock across a network

The plug-and-play mechanisms of the LightStream 1010 allows the switch to come up automatically. All configuration information for port adapter modules can be saved between hot swaps and switch reboots, while interface types are automatically discovered by the switch. This eliminates mandatory manual configuration.

The LightStream 1010 supports any combination of port adapter modules. Customers can configure their switches with only the number and type of interfaces required, with up to 32 CES T1 or CES E1 interface ports.

This section describes the following:

•

•

CES T1 and E1 PAM Features

CES T1 and E1 PAM Applications

8-4LightStream 1010 ATM Switch PAM Installation Guide