155M SFP STM-1 BiDi 40 km, ᵀˣ1550 / ᴿˣ1310 nm, DDM, LC-Simplex, Singlemode

Universal SONET / SDH SFP BiDi Transceiver
Use FLEXBOX to configure to almost any vendor
Double your bandwith by using only one fiber for transmit and receive
Capable of operating in SDH / SONET networks
Supported Data Rates: 125 Mbit/s - 155 Mbit/s
Up to 40 km via Singlemode OS2
LC-Simplex Connector
Digital Diagnocstic Monitoring (DDM)
  • 1550 nm
  • 40 km
  • 155 M
  • BiDi
  • 100M ETH
  • STM-1
Part number
4-6 weeks after ordering
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Form Factor SFP
Connector / Polish LC-Simplex UPC
Interface Singlemode BiDi
Type BiDi EX
Distance 40 km
Temperature Range 0°C - 70°C
Bandwidth 125 Mbit/s - 155 Mbit/s
Digital Diagnostic Management (DDM) Yes, internally calibrated
Power Consumption 1 W
CDR none
Inbuilt FEC No
Powerbudget (dB) 28 dB
Transmit min/max per lane -5 dBm / 0 dBm
Receiver min/max per lane -33 dBm / -10 dBm (overload)
Wavelength TX (Typical) 1550 nm
Wavelength TX (Range) 1500 - 1580 nm
Wavelength RX (Typical) 1310 nm
Wavelength RX (Range) 1260 - 1360 nm
Laser DFB
Receiver Type PIN
Modulation NRZ
Extinction Ratio 8.2 dB
Supported Protocols Fast Ethernet, STM-1

Transceiver Configuration with FLEXBOX

It's that easy to use
Insert Transceiver into FLEXBOX
1. Insert Into FLEXBOX
Select and Configure
2. Select And Configure
  • Choose vendor and compatibility
  • Press play
  • Configuration only takes a few seconds
Use with Device
3. Use With Device
  • Use the transceiver in your device. That's it!
  • Need it for another device? - Re-configure it again and again


All trademarks, registered companies & references cited are the sole property of their respective company and are used solely to assist in the identification of products.

  • MSA Standard compatible
  • A10networks # 11774 compatible
  • ADVA # 11775 compatible
  • Allied Telesis # 11777 compatible
  • Aruba Networks(ex. HP Network) # 11772 compatible
  • Avaya (ex. Nortel) # 11779 compatible
  • Brocade # 11780 compatible
  • Check Point # 11782 compatible
  • Ciena (ex. Nortel) # 11783 compatible
  • Ciena XCVR-A40S55 compatible
  • Cisco Systems ONS-SI-155-L1 compatible
  • D-LINK # 11785 compatible
  • Dell # 11784 compatible
  • Dell (ex. Force10) # 11792 compatible
  • ECI OTR1_L5BD compatible
  • Extreme # 11788 compatible
  • Extreme (ex. Enterasys) # 11787 compatible
  • F5 Networks # 11789 compatible
  • FibroLAN # 11790 compatible
  • Fluke Networks # 11791 compatible
  • Fortinet # 11793 compatible
  • Fujitsu # 11794 compatible
  • H3C (ex. 3COM) # 11773 compatible
  • Hirschmann # 11795 compatible
  • HP H3C # 11796 compatible
  • Huawei eSFP-1550/1310-L1.1-BIDI compatible
  • Infinera (ex. Transmode) # 11814 compatible
  • Intel # 11799 compatible
  • Juniper # 11800 compatible
  • Juniper (ex BTI Systems) # 11781 compatible
  • Korenix SFP100SM40B15D compatible
  • KTI Networks # 11801 compatible
  • LANCOM # 11802 compatible
  • Lenovo (ex. Blade Network) # 11798 compatible
  • LevelOne SFP-7431 compatible
  • Marconi SU66AB compatible
  • MikroTik # 11804 compatible
  • Moxa # 11805 compatible
  • MRV SFP-FD-BD35 compatible
  • Netgear # 11807 compatible
  • Nokia (ex. Alcatel-Lucent) # 11776 compatible
  • Nokia Siemens Networks V50017-U413-K500 compatible
  • Palo Alto Networks # 11810 compatible
  • Perle PSFP-100D-S1LC40D compatible
  • RAD SFP-18B compatible
  • Radware # 11811 compatible
  • Riedel 1090084 compatible
  • TP-LINK # 11812 compatible
  • Transition Networks TN-SFP-OC3SB42 compatible
  • Waystream (ex. Packetfront) # 11809 compatible
  • Westermo 1100-0155 compatible
Your vendor / compatibility is missing?

What customers say

FLEXBOX is not only awesome but also easy to use. One of the standout features of FLEXOPTIX is their compatibility with various vendors. Whether you're working with different hardware providers, you can rely on FLEXOPTIX to work seamlessly across different platforms.

Moreover, the support for FLEXBOX and FLEXOPTIX is exceptional. If you encounter any issues or have questions, you can rely on the support teams to provide timely and effective assistance. They are dedicated to ensuring that users have a smooth experience and can make the most of these technologies. 

Reijo Hakala Specialist / DNA Ltd.

FLEXBOX made my life a lot easier, adapting to multiple hardware in a breeze. I used fiber/SFP, RJ45/SFP, RJ45-10G/SFP for an esports production with different hardware brands and all of them worked instantly.

Before being a FLEXOPTER I had a lot of trouble communicating with my infrastructure and acquisitions team because of the complexity of compatibility between different brands and models

now I can operate and adapt to each on site production.

Emilio Vargas Production Manager / Liga ACE esports
Formerly a System & Network Engineer at the service of French Academic and Research Network and currently developing my own IT services business, I have been a strong advocate of FLEXOPTIX "one-SFP-fits-all" approach since 2015! Having purchased close to 1500 optics over the last few years for different kinds of projects (Metropolitan & Campus Networks, Datacenter, Nexans FTTO projects), I have always been completely satisfied with FLEXOPTIX products. I have had the opportunity to test several competing solutions and for me "FLEXBOX" is by far the most advanced in terms of functionality, ease of use and compatibility. Beyond the flawless technical aspects, the many human qualities of the different people I have had the opportunity to exchange with are a priceless advantage: sympathy, reactivity, impressive know-how, infallible logistics and after-sales services, FLEXOPTIX is a company you enjoy working with and you can trust one hundred percent. Thanks a lot guys!
Francis Monestier System & Network Engineer / JigWan
Have been using FLEXOPTIX transceivers for a few years now in a carrier/telecoms environment for various vendors and they've never disappointed me. After having the opportunity to be able to program them myself on demand, I've realized how many hours I could have saved until now with FLEXBOX! No large stocks, just a few generic SFPs in stock waiting to get programmed when needed. Awesome!
Michael Nicolaou Senior Network Consultant, CDMA Services Ltd