Paradyne 317x E1 manual DTE Drop/Insert Interface, Alarm Message Capability, Front Panel Emulation

ACCULINK 317x E1 DSU/CSU

DTE Drop/Insert Interface

The DTE Drop/Insert interface is compatible with the signal format of CCITT Recommendation G.703 and the frame structure of CCITT Recommendation G.704. This interface allows DTEs/PBXs to share the E1 network with other high-speed equipment.

Alarm Message Capability

The E1 DSU/CSU can be attached, either locally or remotely, to an ASCII terminal or printer to display or print alarm messages. The communications (COM) port can be used as the destination for Alarm Set and Alarm Clear messages. This enables an ASCII terminal or printer to monitor the E1 DSU/CSU for alarm conditions. Alarms can also be displayed on a PC that is using a terminal emulation package.

Front Panel Emulation

The E1 DSU/CSU offers functionality through Front Panel Emulation software that is similar to that provided by the E1 DSU/CSU front panel. The E1 DSU/CSU can either be locally or remotely attached to a 386 or higher personal computer (PC) that has at least four megabytes (MB) of random-access memory (RAM). (An external modem is required for remote attachment.) A copy of the E1 DSU/CSU front panel appears on the PC. The functionality of the front panel is available by clicking on the function keys with the mouse rather than by pressing keys from the actual front panel. For more information, refer to Appendix G, Front Panel Emulation.

SNMP Management Support

SNMP is a network management protocol that is used to monitor network performance and status, and to report alarms (i.e., traps). To function, SNMP requires a manager consisting of a software program housed within a workstation or PC; an agent consisting of a software program housed within a device (e.g., the E1 DSU/CSU); and a Management Information Base (MIB) consisting of a database of managed objects.

Users of the external SNMP manager can issue ªGetº and ªSetº commands to an object in the SNMP database maintained by the E1 DSU/CSU.

The E1 DSU/CSU can be managed by any industry- standard SNMP manager. The company provides an SNMP application that runs on a Hewlett-Packard HP OpenView network management platform. For more information, refer to the ACCULINK 3100 Series Open Management Application for HP OpenView User's Guide.

The E1 DSU/CSU supports the following MIBs:

•MIB II ± Defines the general objects for use in Transmission Control Protocol/Internet Protocol (TCP/IP) internets and provides general information about the E1 DSU/CSU. MIB II is backward-compatible with MIB I.

•DS1/E1 MIB ± Defines objects for managing E1 interfaces and supports the network and DTE Drop/Insert interfaces on the E1 DSU/CSU.

•RS-232-like MIB ± Defines objects for managing RS-232-type interfaces (e.g., RS-422, RS-423, etc.) and supports synchronous data ports (PORTs 1± 4) and management communication ports (AUX and COM ports) on the E1 DSU/CSU.

•Generic-Interface Extension MIB ± An extension to MIB II that defines additional objects for control of generic interfaces in MIB II. It supports control of tests on the E1 and synchronous data interfaces that are not supported by other MIBs.

•Enterprise MIB ± Defines objects that are unique to Paradyne devices.

Two link layer protocols, Point-to-Point Protocol (PPP) and Serial Line Internet Protocol (SLIP), are supported for connection to an external SNMP manager or network device (e.g., a router).

The SNMP manager or network device can be directly connected to the communications (COM) port. An external LAN Adapter can be connected to either the COM port or the auxiliary (AUX) port to provide Ethernet connectivity. Also, the E1 DSU/CSU can be daisy chained together by connecting the COM port of one device to the AUX port of the other, providing SNMP connectivity.

The SNMP management system can communicate to the E1 DSU/CSU remotely through the Facility Data Link (FDL) or the synchronous data port's Embedded Data Link (EDL). FDL provides an in-band channel for performance and control signals on the network interface. It uses the spare bit Sa4 in time-slot zero as defined in CCITT standard G.704. EDL provides the ability to detect and synchronize on a framing pattern, provides cyclic redundancy checking (CRC), and maintains near-end and far-end performance statistics.

1-2 December 1996 3170-A2-GB20-20