Siemens S30813-Q64-X-5 M:FOTX SFP Transceiver

The Siemens S30813-Q64-X-5 (M:FOTX) is a hot-pluggable SFP (Small Form-factor Pluggable) optical transceiver module designed for use in Siemens EWSD, Surpass, TransXpress, and other legacy telecom transmission and switching platforms. It provides a bidirectional optical interface optimized for SDH/SONET and multiservice applications at line rates up to 155 Mbit/s (STM-1/OC-3 class) or compatible Gigabit speeds depending on the host system configuration.The module operates at a nominal wavelength of 1310 nm using a Fabry-Perot laser transmitter and a PIN photodiode receiver. It is intended for single-mode fiber (SMF 9/125 µm) operation with a typical short-to-intermediate reach of up to 2–10 km, suitable for intra-office, co-located equipment, or short metro links. Optical specifications ensure compliance with relevant ITU-T G.957 and Telcordia standards for low jitter, high extinction ratio, and reliable bit error rate performance (better than 10⁻¹²) over the supported distance.

The S30813-Q64-X-5 complies with the SFP MSA and integrates seamlessly with Siemens platforms for framed signal transport, including section, line, and path overhead processing when used with appropriate mapping and cross-connect functions. It supports Loss of Signal (LOS) detection, automatic laser shutdown (ALS) for Class 1 eye safety, and basic performance monitoring capabilities reported to the network element management system.

Optical connectivity is realized via a standard duplex LC connector. The transceiver uses the 20-pin SFP electrical interface with a 3.3 V power supply and low power consumption, enabling deployment in high-density shelves. It supports hot-swap operation in compatible configurations, minimizing service impact during replacement. Environmental specifications follow carrier-class telecom requirements, with an operating temperature range typically from 0°C to +70°C and high humidity tolerance.

This module (often listed with revision /01) is primarily used in Siemens EWSD exchanges, optical transmission systems, and Surpass family equipment for reliable optical interconnections between multiplexers, add-drop units, or tributary interfaces. It provides a cost-effective solution for maintaining or expanding legacy Siemens infrastructure while ensuring compatibility with existing management and alarm systems.

Installation requires standard fiber cleaning procedures, correct Tx/Rx polarity, and adherence to minimum bend radius for patch cords. The Siemens S30813-Q64-X-5 M:FOTX delivers compact, dependable optical connectivity for STM-1 class links in mission-critical telecom environments.