Carrier Access SNMP manual Local and Remote Network Management, Local/Remote Mode Selection

nections on a per channel basis from PBX office-end telephone systems to public network T1 (DS1) services using FXO terminations. The DPT feature of this card is especially useful in remote office or campus T1 environments where it can be used to support one-way Direct Inward Dialing (DID) service for voice mail and call center applications.

•A Battery Reversal FXS/Dial Pulse Origination (BRFXS/DPO) voice card is also avail- able that provides twelve 2-wire Loop Start connections with Tip/Ring battery reversal to the digital T1 (DS1 line). The second function of this card is Dial Pulse Origination (DPO), which is the functional complement to Dial Pulse Termination (DPT) provided by the FXO/DPT voice card.

•The 4-wire E&M/Transmission Only (E&M/TO) voice card supplies 12 channels for connecting to private line circuits, such as PBX tie lines and 4-wire modems often found in utility, cellular, and metropolitan area networks (MANs). Each of the twelve E&M channels can be individually programmed to support Signaling Types I, II, IV or V. This card can also be configured to function as Channel Equipment (normal multiplexer mode) or as Switching Equipment for back-to-back Tandem operation sometimes referred to as “Reverse E&M” or “Pulse Link Repeater.” The Transmission Only (TO) operating mode provides dedicated transmit and receive paths to radio and modem equipment uncorrupted by the insertion of A/B robbed bit signaling.

All analog line interface cards greatly exceed the required analog loop range and are proven V.34 modem compatible. Using a special patent-pending feature developed by Carrier Access Corporation, they also perform automatic impedance matching to adapt to various analog modem types and line lengths. Over-voltage and over-current protection are individually handled on the analog interface channel cards, as well as on the Controller. This distributes the power redundantly so that a line fault or over-voltage on one analog channel card does not affect the operation of another.

1.7 Local and Remote Network Management

The Access Bank II SNMP has three network management options. SNMP and CLI management are described in detail in Chapter 14, SNMP Management and Command Line Interface, while GUI man- agement software is provided in the Access Bank II SNMP User Manual.

•Simple Network Management Protocol (SNMP) for basic network control by a Network Management Station via the Ethernet 10Base-T management port.

•Command Line Interface (CLI) for complete control by a VT-100 terminal via the RS- 232 port, or by a Telnet terminal via the Ethernet 10Base-T port.

•Windows®-based GUI software with graphical user interface (GUI) for user-friendly control by a PC or laptop computer via the RS-232 port.

1.7.1Local/Remote Mode Selection

The Access Bank II SNMP comes equipped with two sets of external DIP switches for selecting local or remote management control. In the local hardware control mode, you can use these DIP switches to perform self-tests for channel alignment, to select basic T1 hardware configuration parameters

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