Alcatel FA111 Optical Line Terminal (OLT)

The Alcatel FA111 is a telecommunications product designed for fiber-optic network deployments, typically used in broadband access networks, metro networks, or enterprise solutions. While specific details about this model may vary depending on its release era and application context (Alcatel, now part of Nokia Networks, has rebranded many legacy products), the FA series often refers to Fiber Access or Fiber Aggregation devices. Below is a generalized technical and functional overview based on Alcatel’s typical fiber-optic product line:

Technical Specifications

1. General Architecture
   • Product Type: Fiber-optic multiplexer/aggregation device or optical line terminal (OLT).
   • Deployment: Designed for FTTx (Fiber-to-the-X) networks, including FTTH (Fiber-to-the-Home) and business access.
   • Compatibility: Supports GPON (Gigabit Passive Optical Network) or Active Ethernet standards, depending on configuration.
2. Optical Performance
   • Wavelengths: 
     • Downstream: 1490 nm (GPON) or 1310/1550 nm (Active Ethernet).
     • Upstream: 1310 nm (GPON) or 1550 nm (Active Ethernet).
   • Transmission Distance: Up to 20-40 km (depending on fiber type and splitters).
   • Sensitivity: Receiver sensitivity up to -28 dBm for robust signal detection.
   • Power Budget: ~28 dB (GPON Class B+ or C+ modules).
3. Port Configuration
   • Optical Ports: 
     • 1–4 GPON ports (SC/APC connectors) for customer premises equipment (ONT/ONU) connectivity.
     • Uplink ports (10G XFP/SFP+ or 1G SFP) for backbone network aggregation.
   • Ethernet Ports: 
     • 1–8x 10/100/1000BASE-T ports for legacy or management connectivity.
     • Optional 10G Ethernet uplinks.
4. Capacity and Scalability
   • Subscribers per Port: Supports up to 64-128 end-users per GPON port (shared bandwidth).
   • Total Throughput: Up to 2.5 Gbps downstream / 1.25 Gbps upstream (GPON) or 10 Gbps (XGS-PON).
5. Power and Environmental
   • Power Supply: Dual redundant AC/DC power inputs (100–240V AC or -48V DC).
   • Operating Temperature: -5°C to +55°C (industrial-grade models available).
   • Cooling: Passive or forced-air cooling (depending on deployment environment).
6. Management and Protocols
   • Management Interface: CLI, SNMP, or web-based GUI (e.g., Alcatel’s OmniVista or 5620 SAM).
   • Protocol Support: 
     • Layer 2/Layer 3 switching (VLAN, QoS, IGMP snooping).
     • DHCP, IPv4/IPv6, and GPON OMCI (ONT Management and Control Interface).

Functional Applications

1. FTTH/FTTB Deployments
   • Aggregates and distributes high-speed internet, VoIP, and IPTV services to residential or business users via passive optical splitters.
2. Metro-Access Convergence
   • Acts as an OLT (Optical Line Terminal) to connect metro/core networks with last-mile fiber distribution.
3. Enterprise Network Backbone
   • Provides scalable fiber connectivity for campus networks, data centers, or remote offices.
4. Triple-Play Service Delivery
   • Enables seamless delivery of voice, video, and data over a single fiber infrastructure.
5. GPON/XGS-PON Migration
   • Supports upgrades to next-gen technologies like XGS-PON (10 Gbps symmetric) for future-proofing networks.

Key Features

• High Density: Efficiently serves hundreds of users with minimal rack space.
• Dynamic Bandwidth Allocation (DBA): Optimizes traffic prioritization for low-latency applications (e.g., VoIP, 4K video).
• Carrier-Grade Reliability: Features like auto-failover and redundant PSUs ensure 99.999% uptime.
• Security: AES-128 encryption for GPON traffic and ONT authentication (SN/MAC-based).

Legacy Considerations

• End-of-Life Status: Older Alcatel FA series models may no longer be actively supported; Nokia Networks now offers updated equivalents like Alcatel-Lucent ISAM FX or Lightspan series.
• Interoperability: Compatible with third-party ONTs/ONUs adhering to ITU-T G.984 (GPON) or IEEE 802.3ah (Ethernet) standards.