CES T1 and E1 Port Adapters

This chapter describes the circuit emulation service (CES) T1 and E1 port adapters that are supported in the following ATM systems:

• Catalyst 8540 MSR
  
  
• Catalyst 8510 MSR
  
  
• LightStream 1010
  
  
• Catalyst 5500
  
  

This chapter includes the following sections:

• About CES T1 and E1 Port Adapters
  
  
• Cabling CES T1 and E1 Port Adapters
  
  

About CES T1 and E1 Port Adapters

CES T1 and E1 port adapters are used for links that require constant bit rate (CBR) services such as interconnecting PBXs, time-division multiplexers, and video conference equipment over campus, private, or public networks. The T1 port adapters support unshielded twisted-pair (UTP) connectors and the
E1 port adapters support either twisted-pair, foil twisted-pair (FTP), or 75-ohm BNC connectors.

Interface Ports Supported

The ATM switch router supports any port adapter combination required. Table 13-1 identifies the maximum number of CES T1 or CES E1 interface ports supported in each system.

Figure 13-1 shows a CES T1 or E1 port adapter that supports UTP connectors.

Figure 13-1: CES T1 or E1 Port Adapter with UTP Connectors

ATM Connections Supported

The CES T1 or CES E1 port adapters have four ports that provide the following ATM connections for intercampus or wide-area links (see Figure 13-2 ):

• PBX interconnects
  
  
• Time-division multiplexer connections
  
  
• Video conference connections
  
  

Figure 13-2: CES T1 and E1 Port Adapter ATM WAN Connections

FCC Part 68 Notice

The CES T1 port adapter (Model WAI-T1C-4RJ48) used in the ATM LAN switch router complies with Part 68 of the FCC rules. On the bottom of this equipment is a label that contains, among other information, the FCC registration number. If requested, this information must be provided to the telephone company.

This equipment cannot be used on telephone company-provided coin services. Connection to the Party Line Service is subject to state tariffs.

If this equipment causes harm to the telephone network, the telephone company notifies you in advance that temporary discontinuance of service might be required. If advance notice is not practical, the telephone company notifies you as soon as possible. Also, you are advised of your right to file a complaint with the FCC if you believe it is necessary.

The telephone company can make changes in its facilities, equipment, operations, or procedures that might affect the operation of the equipment. If this happens, the telephone company provides advance notice so you can make the necessary modifications to maintain uninterrupted service.

If you experience with this equipment, please contact us for repair and warranty information. If the trouble is causing harm to the telephone network, the telephone company can request that you remove the equipment from the network until the problem is resolved.

We recommend that the customer install an AC surge arrestor in the AC outlet to which this device is connected. This is to avoid equipment damage caused by local lightning strikes and other electrical surges.

This equipment uses Uniform Service Order Code (USOC) jacks as listed in Table 13-2.

Cabling CES T1 and E1 Port Adapters

This section describes supported cabling configurations for the CES T1 and E1 ATM port adapters, which provide CES T1 and E1 twisted-pair and CES E1 BNC connections.

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 T1 and E1 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 adapters can support interfaces that connect to the following physical layers:

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

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Note   For descriptions of ATM cabling requirements, see the "E1, CES E1, DS3, E3, and CDS3 Connections" section.

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CES T1 and E1 Port Adapter Connectors

To connect the CES T1 or CES E1 port adapters to the external CES network, use the following connectors (see Figure 13-3):

• For CES traffic over twisted-pair, use the RJ-48c connector.
  
  
• For coaxial traffic, use the BNC connector.
  
  

Caution   Connect T1 and E1 ports 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 "Connectors and Connector Pinouts."

Figure 13-3: 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. (See Figure 13-3.) Table 13-3 describes the LEDs, and Table 13-4 lists the possible status conditions.

Note   During alarm integration, the indicated LEDs flash the "upcoming" or "next" state combination indicated in Table 13-4. For example, when the line conditioning state machine is notified of loss of signal (LOS), S1 (TX) and S2 (RX) flash red because a continued LOS puts the port in the red alarm state.