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This chapter describes cabling and configuration procedures for the LightStream 1010 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 publication.
This chapter contains the following sections:
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 notifies you in advance that temporary discontinuance of service might be required. If advance notice is not practical, the telephone company notifies the customer 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 could affect the operation of the equipment. If this happens, the telephone company provides advance notice in order for you to make the necessary modifications 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 can request you remove the equipment from the network until the problem is resolved.
We recommend that you 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 Uniform Service Order Code (USOC) jacks as shown in Table 6-1.
| 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 PAMs are ideal for intercampus or wide-area links (see Figure 6-1). The four ports on the PAM can be configured as redundant links using the switch routing protocols. The PAM supports unshielded twisted-pair (UTP) and BNC connectors. Receive and transmit LEDs on each port give quick, visual indications of port status and operation.
Each port 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 feature is useful when communicating with a slow receiver or when connected to public networks with peak-rate tariffs.
The LightStream 1010 switch powers up automatically. All configuration information for PAMs is saved between hot swaps and switch reboots, while interface types are discovered automatically by the switch. This eliminates mandatory manual configuration.
The LightStream 1010 supports any PAM combination. You can configure your switch with only the number and type of interfaces required, with up to 32 T1 or E1 interface ports.
The T1 and E1 Trunk PAM is ideal for intercampus or wide-area links. Figure 6-2 is an example of the T1 trunk PAM applications.
The T1 and E1 PAMs provide connectivity to the WAN 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 T1 and E1 trunk connectors and PAM network connections and LEDs.
For T1 and E1 trunks, use the UTP interface to connect the T1 and E1 trunk PAM with the WAN or other switches. See the section "ATM Connection Equipment" in the chapter "Installing the LightStream 1010 ATM Switch PAMs" 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 6-3) with bayonet-style, twist-lock (BNC) connectors to connect the E1 PAM with the WAN or external ATM switch. See the section "ATM Connection Equipment" in the chapter "Installing the LightStream 1010 ATM Switch PAMs" for a description of a BNC-type connector and coaxial cable.
The T1 and E1 PAMs provide an interface to ATM switching fabrics for transmitting and receiving data at 1.544 and 2.048 Mbps bidirectionally; the actual data rate is determined by the physical layer interface module (PLIM). The T1 and E1 PAM LEDs provide status information for the 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 6-3. For detailed descriptions of ATM cabling requirements, refer to the sections "ATM Connection Equipment" and "ATM Connection Equipment" in the chapter "Installing the LightStream 1010 ATM Switch PAMs."
The LEDs provide status information for the individual T1 and E1 interface connections. The LEDs are described in Table 6-2 and shown in Figure 6-3.
| LED | Description |
|---|---|
Off---Carrier detect signal not received | |
Off---No receive line activity | |
Off---No transmit line activity |
| 1LOF = loss of frame. 2LCD = loss of cell delineation. 3AIS = alarm indication signal. 4FERF = far-end receive failure. |
When the switch is powered on without any previous configuration data, the ATM interfaces are automatically configured on the physical ports. The Interim Local Management Interface (ILMI) and the physical card type are used to automatically derive the ATM interface type, User-Network Interface (UNI) version, maximum virtual path identifier (VPI) and virtual channel identifier (VCI) bits, ATM interface side, and ATM UNI type.
The interface configuration is described in the following section "Default ATM Interface Configuration Without Autoconfiguration."
If ILMI is disabled or if the connecting end node is not supporting ILMI, the following defaults are assigned to all T1 and E1 interfaces:
The following PAM types have specific defaults assigned:
T1 PAM:
E1 PAM:
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