Tellabs 81.5504 is a legacy line interface / port daughter board used in Tellabs transport and digital cross‑connect systems, such as the TITAN 532L/5320L family and similar SONET/SDH network platforms. This board functions as an auxiliary module that supports signal interfacing between port cards and the system backplane, enabling proper electrical and logical connection of network ports. The module is typically found in refurbished and spare parts inventories and is used for maintenance, repair, or upgrading of legacy telecom infrastructure equipment.
Key Features
- Manufacturer: Tellabs
- Part Number: 81.5504
- Product Type: Line Interface / Port Daughter Board Module
- Application: Legacy Tellabs transport and cross‑connect systems
- Function: Auxiliary interface board for port signal coordination
- Compatibility: Tellabs TITAN 532L, 5320L and legacy SONET/SDH rack systems
- Design: Telecom‑grade daughter board module
Technical Specifications
- Module Type: Line interface daughter board
- Function: Provides interface support for line‑side signal cards
- Integration: Installs on backplane or associated parent card
- Deployment: Carrier, metro, and enterprise telecom environments
- Field‑Replaceable Unit: Yes (module replacement for service/repair)
- Use Case: Port interface and logical signal handling within chassis
- Operation: Works in conjunction with main port and control modules
90 DAY'S
