Description
Product Introduction
The Alcatel-Lucent 11075L-128 (Part Number BAC3282EAA) is a high-density ATM line processing module specifically engineered for the legacy Lucent / Alcatel-Lucent CBX 500 Multiservice Edge Switch platform. Built for carrier-grade core networks, critical utility backbones, and government routing infrastructures, this board executes high-throughput ATM segmentation and reassembly (SAR), cell switching, and circuit emulation across high-speed transport rings.
Equipped with a expanded 128MB onboard packet buffer memory pool, the 11075L-128 variant prevents cell drops and packet jitter during burst traffic conditions. Unlike basic physical layer interface cards, this board houses onboard RISC-based processing hardware to enforce strict Quality of Service (QoS) parameters, Virtual Circuit (VC) traffic shaping, and congestion control directly at the ingress line level. If you are responsible for keeping aging, high-reliability ATM transport nodes online without costly platform overhauls, this card provides an exact drop-in replacement.
Key Technical Specifications
| Parameter | Specification / Value |
| Model Code | 11075L-128 |
| Manufacturing Part Number | BAC3282EAA |
| HECI Code | BAA9Y1SBAA (or equivalent profile) |
| Platform Compatibility | Alcatel-Lucent / Lucent CBX 500 Multiservice Switch |
| Module Type | ATM Line Processor / Interface Card |
| Onboard Buffer Memory | 128 MB RAM |
| Bus Interface | High-Speed Proprietary CBX Backplane |
| Operating Voltage | -48V DC Backplane Power Feeds |
| Form Factor | Single-Slot CBX 500 Chassis Line Module |
| Status Indicators | LED (Power, Module Status, Active, Line Loopback, Link Alarm) |
Application Scenarios & The “Trench” Experience
It is 2:15 AM at a regional telecom switching site. A legacy CBX 500 switch supporting core municipal SCADA links and emergency voice trunks throws a fatal hardware error on an ATM line processor card. Packet buffers stall, latency spikes across active virtual circuits, and red alarms flood your management console. Sourcing an original, fully functional Lucent processing card for a platform declared end-of-life years ago can be a nightmare. You don’t have months to migrate those legacy circuits over to IP/MPLS routing. Swapping in a pre-tested, factory-sealed 11075L-128 BAC3282EAA card clears the alarm, re-establishes cell routing, and buys you years of continuous node stability.
Target Applications
- Telecom Core WAN Access: Routing and shaping high-density ATM virtual path/circuit payloads across regional transport switches.
- Utility SCADA Networks: Providing deterministic, ultra-low-latency cell transport for electric and water utility monitoring networks.
- Air Traffic & Transport Signaling: Maintaining legacy ATM-based communication backbones where equipment re-certification is cost-prohibitive.
- Defense Infrastructure: Supporting locked-down legacy optical and electrical transport networks running crypto-secured ATM links.
Field Case Study
A major regional infrastructure provider experienced an unexpected memory parity failure on a critical CBX 500 line card during a severe storm event. The primary line processor failed, disrupting mission-critical telemetry feeds. The original vendor offered no replacement options. We shipped a bench-tested, refurbished 11075L-128 (BAC3282EAA) module overnight. The site engineer hot-swapped the module, restored card provisioning via the CLI, and restored full telemetry synchronization in under 15 minutes without dropping adjacent shelf traffic.
11075L-128 BAC3282EAA
11075L-128 BAC3282EAA
Transparency SOP: Quality Assurance & Testing
Legacy telecom boards require rigorous validation before being deployed into live production racks. We subject every 11075L-128 board to strict bench-testing protocols:
- Inbound Visual & Physical Audit: High-magnification microscopy inspection of surface-mount components, trace layers, backplane connector pins, and solder joints to detect thermal fatigue or micro-cracks.
- Chassis Live-Rig Handshake: Card insertion into an active Lucent CBX 500 test shelf to verify power rail stability, EEPROM readout, HECI code matching, and boot diagnostics.
- ATM Traffic Load & RAM Stress Testing: Pushing sustained ATM cell traffic across ports while running deep read/write test patterns against the onboard 128MB RAM buffer to ensure zero memory errors or cell drops.
- Firmware & EEPROM Audit: Verifying onboard FPGA code revisions and logging serial numbers against OEM manufacturing profiles for full traceability.
- ESD-Safe Packaging: Cleaned with specialized anti-static solution, sealed in static-shielding bags, and embedded in custom high-density foam packaging built for safe global transit.
The Veteran’s Tech Trap Guide (Crucial Value-Add)
⚠️ 1. Verify Onboard Buffer Capacity (-128 vs -64)
Do not confuse the 11075L-128 with older 11075L-64 hardware modules. The -128 designation signifies 128MB of onboard buffer RAM. If your CBX 500 shelf configuration mandates expanded packet buffers for heavy QoS traffic management, installing a 64MB variant into that slot can cause buffer exhaustion and dropped cells under peak load.
❗ 2. Respect the Backplane Pin Arrays
The CBX 500 shelf backplane relies on high-density, multi-pin connectors. Guide the 11075L-128 board straight along the card tracks. Never force the front ejector handles. If you feel hard mechanical resistance before the card sits completely flush against the backplane, pull it back and inspect for bent or misaligned pins using a flashlight.
⚠️ 3. Match the Part Number and HECI Codes
Check your existing card’s label for both BAC3282EAA and its associated HECI code (e.g., BAA9Y1SBAA). While CBX 500 boot code supports a broad range of processing cards, mixing mismatched hardware revisions without updating system boot software can trigger a software-hardware mismatch lock on boot-up.
❗ 4. Wrist Straps Are Non-Negotiable
The onboard RISC processor and ATM SAR ASICs are exceptionally vulnerable to electrostatic discharge. An unseen static shock while touching the edge connectors won’t always destroy the board instantly; it often damages internal gates, leading to erratic link drops weeks down the road. Clip your grounded ESD wrist strap to the shelf ground lug before handling the module.
Frequently Asked Questions (FAQ)
Q: Is the 11075L-128 / BAC3282EAA card hot-swappable?
A: Yes, the CBX 500 architecture supports online insertion and removal (OIR) of line modules. However, you should administratively disable the card interface in the management software prior to pulling the module to prevent false link-down alarms across adjacent network nodes.
Q: What is the relationship between model 11075L-128 and part number ?
A: They identify the exact same physical board assembly. 11075L-128 is the top-level marketing/model series designation, whereas is the specific Lucent/Alcatel-Lucent manufacturing part number printed on the board’s barcode label.
Q: Can this module be installed in chassis platforms other than the CBX 500?
A: No. The mechanical form factor, pinout, and backplane protocol are strictly proprietary to the Lucent / Alcatel-Lucent CBX 500 multiservice chassis family.
Q: How do you guarantee the reliability of discontinued legacy hardware?
A: Every board goes through comprehensive visual inspection, chassis live-rig boot verification, extended RAM buffer stress testing, and traffic load testing on a live CBX 500 chassis prior to placement in our surplus stock.
Q: What warranty is included with this module?
A: All our New Surplus and Refurbished Alcatel-Lucent / Lucent cards come backed by a full 12-month advance replacement warranty. If a module fails functional or traffic checks during normal operation, we dispatch a replacement unit immediately.
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