ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

TAD-104

Page 1 of 11

TBOS INTERFACE DESCRIPTION

Summary: This section provides information for operating the Soneplex Broadband system using a Telemetry Byte Oriented Serial (TBOS) remote interface. The TBOS interface provides a reliable means of communicating transmission alarm information between an Alarm Processing telemetry Remote (APR) unit and the Soneplex Broadband system.

MPU

The MPU contains the processor, memory, and communication facilities to interface with a centralized system administration control center. The MPU monitors the alarm/status conditions of each module installed in the same chassis, as well as the alarm/status conditions of the remote modules that are connected to them. The alarm/status conditions are saved in MPU memory for transmission to the centralized administration center via TBOS protocol.

The MPU (Main Processing Unit) interfaces internally to the TBOS communications link/protocol link to report alarm/status for local and remote modules, control and report loopback configuration, and control and report protection switching status.

The MPU interfaces externally to a TBOS communications link/protocol. TBOS is the basic communications format used by the customer-provided E2A-Alarm Processing telemetry Remote (APR) equipment. The E2A-APR allows the concentration of up to 504 alarm indications onto a four-wire alarm bus. The E2A-APR operates with a centralized alarm surveillance/reporting system similar to the Bell Network Monitoring and Analysis (NMA) System and TASC (Telecommunications Alarm Surveillance and Control) or the DFMS (Digital Facility Maintenance System). AT&T Compatibility Bulletin 149 (CB-149) specifies the detailed requirements of the E2A-APR.

DS1 Signal Routing

Each DS1 signal corresponds to a specific mounting slot in the chassis. The DS1 signal and the corresponding group-slot numbers are shown in Table 104-1.

MPU TBOS Interface

The MPU TBOS interface is designed to meet AT&T CB-149, Section B2. Selection of hardware port communication parameters and TBOS display options is performed through the Craft Interface Serial Port Configuration screen.

Reference: DLP-549Serial Port Configuration

Information is transferred between the MPU and chassis modules via a synchronous communication channel in the chassis backplane. The MPU polls each module for alarm and status data and stores it into memory until requested by TBOS. Additionally, commands issued by TBOS are passed through the MPU to the target module across this channel.

2-266

© 2000, ADC Telecommunications, Inc.