Cabling the CES Port Adapter

This chapter describes supported cabling configurations for the circuit emulation service (CES) T1 and E 1 ATM port adapters, which provide CES T1 and E1 twisted pair and CES E1 BNC connections. This chapter is organized into the following sections:

For detailed, up-to-date configuration instructions, see the following publications:

Catalyst 8540 MSR Software Configuration Guide
LightStream 1010 ATM Switch and Catalyst 8510 MSR Software Configuration Guide
Catalyst 5000 Series Software Configuration Guide

For command-line interface (CLI) command descriptions, see the following publications:

Catalyst 8540 MSR Command Reference
LightStream 1010 ATM Switch and Catalyst 8510 MSR Command Reference
Catalyst 5000 Series Command Reference

Note All CES interfaces are bidirectional. You must use the appropriate CES interface cable to connect the CES BNC or twisted-pair port adapter interface with an external CES network.

CES Port Adapter Supported Interfaces

The CES T1 and CES E1 port adapters provide an interface to CES switching fabrics for transmitting and receiving data at up to 1.544 Mbps (T1) and 2.048 Mbps (E1) bidirectionally. The CES port adapter can support interfaces that connect to the following physical layers:

E1 G.703 with HDB3 coding
E1 2.048-Mbps coaxial cable

Note For descriptions of ATM cabling requirements, refer to the section "ATM Connection Equipment Requirements" in the chapter "Installing ATM Port Adapters."

CES Port Adapter Connectors

To connect the CES T1 or CES E1 port adapters to the external CES network, use the following connectors. (See Figure 8-1.)

For CES traffic over twisted-pair, use the RJ-48C connector.

For coaxial traffic, use the BNC connector.

Caution
T1 and E1 ports must be connected to a network termination unit (NTU). NTU devices should comply with UL 1950, CSA 950, EN 60950, and IEC 950 standards.

Note For a description of these connectors, see the section "ATM Connection Equipment Requirements" in the chapter "Installing ATM Port Adapters." (Figure 2-3 shows an RJ-48C connector. Figure 2-4 shows a BNC connector.)

Figure 8-1: CES T1 and E1 Connections and LEDs

CES T1 and E1 Port Adapter LEDs

The LEDs provide status information for the individual BNC and twisted-pair interface connections. Table 8-1 describes the LEDs. Table 8-2 lists the possible status conditions. The LEDs are shown in Figure 8-1.

Table 8-1: CES T1 and E1 Port Adapter LED Descriptions
LED Description

S1 (status1)

Steady green, red, or yellow; flashing green, red, or yellow; or off.

S2 (status2

Steady green, red, or yellow; flashing green, red, or yellow; or off.

CD (carrier detect)

Either on (green) or off.

Table 8-1: **CES T1 and E1 Port Adapter LED Descriptions**
LED	Description
S1 (status1)	Steady green, red, or yellow; flashing green, red, or yellow; or off.
S2 (status2	Steady green, red, or yellow; flashing green, red, or yellow; or off.
CD (carrier detect)	Either on (green) or off.

Table 8-2 shows the possible status conditions of a CES T1or CES E1 port, as indicated by certain settings of associated port LEDs.

Table 8-2: CES T1 and E1 LED Status Conditions
Port Status Indication S1 LED State S2 LED State CD LED State

Port not configured

Off

Off

Off

Port administratively down

Off

Off

Off

Normal

Green

Green

Green

Red alarm due to framing error

Red

Red

Off

Red alarm due to loss of cells

Red

Red

Green

Yellow alarm

Yellow

Off

Green

Blue alarm

Off

Yellow

Green

Port in loop state

Flashing green

Flashing green

Green

**Table 8-2: CES T1 and E1 LED Status Conditions**
Port Status Indication	S1 LED State	S2 LED State	CD LED State
Port not configured	Off	Off	Off
Port administratively down	Off	Off	Off
Normal	Green	Green	Green
Red alarm due to framing error	Red	Red	Off
Red alarm due to loss of cells	Red	Red	Green
Yellow alarm	Yellow	Off	Green
Blue alarm	Off	Yellow	Green
Port in loop state	Flashing green	Flashing green	Green

Note During alarm integration, the indicated LEDs flash the "upcoming" or "next" state combination indicated in Table 8-2. For example, when the line conditioning state machine is notified of loss of signal (LOS), S1 and S2 flash red, since a continued LOS puts the port in the red alarm state.

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