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This chapter describes cabling and configuration procedures for the LightStream 1010 asynchronous transfer mode (ATM) switch 1.544 Mbps (T1) or 2.048 Mbps (E1) port adapter modules (PAMs). When your switch leaves the factory, it is configured as specified in your order and is ready for installation and startup. As your communication requirements change, you might want to upgrade your system, add components, or change the initial configuration.
The following PAMs are described in this chapter:
Software and upgrades require specific document part numbers and other frequently updated information; therefore, only basic software configuration guidelines are included in this publication. Detailed, up-to-date instructions are included in the LightStream 1010 ATM Switch Software Configuration Guide. Command line interface (CLI) command descriptions are provided in the LightStream 1010 ATM Switch Command Reference.
This chapter contains the following information:
The T1 port adapter complies with Part 68 of the FCC rules. On the tray 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 will notify you in advance that temporary discontinuance of service may be required. If advance notice isn't practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary.
The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service.
If trouble is experienced with this equipment, please contact us for repair and warranty information. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved.
It is recommended that the customer install an AC surge arrestor in the AC outlet to which this device is connected. This is to avoid damaging the equipment caused by local lightning strikes and other electrical surges.
This equipment uses USOC jacks as follows:
| Model Name | Facility Interface Code | Service Order Code | Jack Type |
|---|---|---|---|
| WAI-T1-4RJ48 | 04DU9-BN | 6.0N | N/A |
| WAI-T1-4RJ48 | 04DU9-DN | 6.0N | N/A |
| WAI-T1-4RJ48 | 04DU9-1KN | 6.0N | N/A |
| WAI-T1-4RJ48 | 04DU9-1SN | 6.0N | N/A |
| WAI-T1-4RJ48 | 04DU9-1ZN | 6.0N | N/A |
The T1 and E1 trunk port adapter modules are ideal for intercampus or wide-area links (see Figure 7-1). The four ports on the PAM can be configured as redundant links using the switch routing protocols. The PAM supports UTP and BNC connectors and receive and transmit LEDs on each port give quick, visual indications of port status and operation.
Each of the ports on the PAM can be configured to support the following clocking options:
Traffic-pacing allows the aggregate output traffic rate on any port to be set to a rate below the line rate; this is useful when communicating with a slow receiver or when connected to public networks with peak rate tariffs.
The plug-and-play mechanisms of the LightStream 1010 allow 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 T1 or E1 interface ports.
This section describes the following:
The T1 and E1 trunk PAMs provide the following features:
The T1 and E1 Trunk Port Adapter Module is ideal for intercampus or wide-area links. Figure 7-2 is an example of the T1 trunk PAM applications.
The T1 and E1 PAMs provide connectivity to the wide area network through T1 or E1 trunk lines.
All ATM interfaces are full duplex. You must use the appropriate ATM interface cable to connect the ATM BNC or UTP PAM interface with an external ATM network.
This section describes the following:
For T1 and E1 trunks, use the UTP interface connect to connect the T1 and E1 trunk PAM with the wide area network or other switches. See the section "Preparing Network Connections" in the chapter "Preparing for Installation" for a description of an RJ-45 connector and UTP cable.
For BNC E1 connections, use the 75-ohm, RG-59, coaxial cable (see Figure 7-3), which has bayonet-style, twist-lock (BNC) connectors, to connect the E1 PAM with the wide area network or external ATM switch. See the section "Preparing Network Connections" in the chapter "Preparing for Installation" for a description of a BNC-type connector and coaxial cable.
The T1 and E1 PAM provides an interface to ATM switching fabrics for transmitting and receiving data at 1.544 and 2.048 Mbps bidirectionally. The T1 and E1 PAM LEDs provide status information for the port adapter module's individual interface connections.
 | Caution The T1 and E1 port must be connected to an NT1 device. |
The T1 and E1 PAM can support interfaces that connect to the following physical layers:
Connect the ATM interface cables as shown in Figure 7-3. For detailed descriptions of ATM cabling requirements, refer to the sections "Preparing Network Connections" and "ATM Connection Equipment" in the chapter "Preparing for Installation."
The T1 and E1 PAMs provide an interface to ATM switching fabrics for transmitting and receiving data at T1 and E1 trunks bidirectionally; the actual data rate is determined by the physical layer interface module (PLIM).
The LEDs provide status information for the port adapter module's individual T1 and E1 interface connections. The LEDs are shown in Figure 7-3 and are described in Table 7-2.
| LED | Description |
|---|---|
| CD (Carrier Detect) | Off--Carrier detect signal not received Green--Carrier detect signal received |
| RX (Receive) | Off--No receive line activity Flashing green--Cells being received: blinks every five seconds and pulse rate increases with data rate Flashing yellow--Loopback Red--Alarm (LOF1, LCD2, AIS3) |
| TX (Transmit) | Off--No transmit line activity Flashing green--Cells being transmitted: pulse rate increases with data rate Flashing yellow--Loopback Steady yellow--Alarm FERF4 |
When the switch is powered on initially without any previous configuration data, the ATM interfaces are automatically configured on the physical ports. ILMI and the physical card type are used to automatically derive the ATM interface type, UNI version, maximum virtual path identifier (VPI) and virtual channel identifier (VCI) bits, ATM interface side, and ATM UNI type.
When you hot-swap a CM or PAM, the configuration for the initially installed PAM interface configuration is saved and, if the same type of PAM is reinstalled, no additional configuration is needed and the initial configuration will be reestablished. See the section "What is Hot Swapping?" in the chapter "Installing the LightStream 1010 ATM Switch PAMs" for detailed information.
The interface configuration is described in the section "Default ATM Interface Configuration Without Autoconfiguration."
If ILMI has been disabled or if the connecting end node does not support ILMI, the following defaults are assigned to all T1 and E1 interfaces:
The following PAM types have specific defaults assigned:
T1 PAM:
E1 PAM:
This concludes the explanation of the T1 and E1 port adapter module cabling and configuration.
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