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Key Technical Specifications
- Part Number: 3HE06936AA
- Description: 7950 XRS-20 XCM (XMA Control Module)
- Platform: Alcatel-Lucent / Nokia 7950 XRS
- Function: XMA control and slot switching
- Switching Capacity: 800G
- Module Support: Accepts 2 XMAs and/or C-XMAs
- Application: Carrier routing chassis
- Compatibility: Verify exact chassis and shelf revision before ordering
- Condition: New Original / New Surplus
Product Introduction
Alcatel 3HE06936AA is a 7950 XRS-20 XCM module used in the Alcatel-Lucent / Nokia carrier routing platform. It provides XMA control and slot switching capacity for the chassis, and the published description identifies it as the XMA Control Module.
This is the kind of part buyers order by exact number, not by description. The value is in chassis-level compatibility, 800G switching capacity, and the ability to support two XMAs or C-XMAs in the correct system layout.
- 3HE06936AA
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Chassis does not recognize the module | Wrong part number, bad seating, or slot issue | ✅ High | Reseat the module, inspect connector pins, confirm exact 3HE06936AA match | Verify chassis compatibility before replacement |
| One or both XMA slots stay inactive | XMA not supported, bad companion module, or control fault | ✅ High | Check companion module status and chassis alarms | Test with known-good XMA before condemning this card |
| Boot or startup alarm on shelf | Power, firmware, or mismatch issue | ✅ High | Read system alarm log and shelf diagnostics | Confirm shelf software and hardware revision alignment |
| Intermittent traffic loss | Loose seating, backplane contact issue, or thermal problem | ✅ High | Check module latch, rack airflow, and temperature readings | Inspect physical installation and cooling path |
| Fans or other cards alarm after install | Incorrect shelf configuration or power loading | ❌ Low | Compare total chassis power budget and slot assignments | Check system-level configuration first |
| Module passes boot but no service impact | Service is mapped elsewhere | ❌ Low | Review service provisioning and slot binding | Confirm the module is actually in the active path |
If you are stuck, contact technical support with photos and diagnostic logs.
Frequently Asked Questions
Q: What is the Alcatel 3HE06936AA?
A: It is a 7950 XRS-20 XCM, also described as an XMA Control Module. In plain terms, it manages control and slot switching for the platform.
Q: Is this the same as a regular line card?
A: No. This is a control module, not a service card. It handles chassis-level control functions tied to the XMA architecture.
Q: Is it a direct replacement for any 7950 card?
A: No, it is only a direct fit when the chassis, shelf, and module role match the exact part number. Similar-looking Alcatel modules are not safe substitutes.
Q: Why is surplus stock cheaper than factory supply?
A: Usually because it comes from excess inventory, decommissioned systems, or brokered stock. The lower price is real, but you must verify revision and compatibility before buying.
Q: Can I install it without checking software version?
A: I would not do that. Carrier routing gear can reject hardware or behave badly when the platform code and module expectation do not line up.
Q: What condition should I expect?
A: Most market listings for this part are New Original or New Surplus. If it is refurbished, that should be stated clearly, along with test status and cosmetic condition.
Q: What should I send before ordering?
A: Send the full part number, chassis model, slot role, and a photo of the existing module label. That cuts down on the usual mismatch mistakes fast.
