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2:1 Optical Bypass Protection Switch / Auto Change-over

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The 7707BPX is a wide band 2 x 1 optical protection switch that provides auto-changeover functionality by detecting changes in the optical input power level.

The 7707BPX has integrated VistaLINK® technology for remote control and monitoring capability via SNMP. This provides the user with the ability to locally or remotely configure and monitor parameters such as module status, selected input, power level and switching threshold.

In the application of auto-changeover, the 7707BPX can be configured to have a MAIN input and a STANDBY input. In this configuration, it will automatically switch to the Standby input when the Main input power is weak or lost. It can also be configured to have auto or manual switch back to the Main input when the signal is re-established.

The 7707BPX occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.


  • Intelligent auto switching with input power detection and user definable thresholds
  • Supports automatic or manual control via SNMP or GPI
  • Comprehensive signal and card status monitoring via four-digit card-edge display, or remotely through SNMP and VistaLINK® capability
  • Fully Hot-swappable from front of frame with no fiber disconnect/reconnect required
  • Accept any wavelength in the 1270nm to 1610nm range
  • Supports single mode fiber optic cable
  • SC/PC, SC/APC or FC/PC fiber connector options

* 7707BPX to be used ONLY in Single Mode Fiber applications


Optical Input/Output

Number 3 bi-directional
Connector SC/PC, SC/APC, FC/PC female housing
Insertion Loss < 3dB
Switch Time < 30ms
Maximum Input Power +5dBm
Input Optical Sensitivity -40dBm
Operating Wavelength 1270nm to 1610nm
Fiber Size 9µm core / 125µm overall

General Purpose Inputs

Number of Inputs 2
Type Opto-isolated, active low with internal pull-ups to +5V
Connector 2 pins plus ground on 6 pin terminal strip
Signal Level
+5V Pullup Low: -5V to +2.5V DC, High: 3.5V to 10V DC
+12V Pullup Low: -5V to +9.5V DC, High: 10.5V to 15V DC
Maximum Sink Current 15mA (input shorted to ground)
Maximum Leakage Current
for Input High

General Purpose Outputs

Number of Outputs 1
Type "Dry Contact" relay contacts - normally open & normally closed contact provided
Connector 3 pins on 6 pin terminal strip


Voltage +12V DC
Power 3 Watts
EMI/RFI Complies with FCC Part 15 Class A, EU EMC Directive


Number of Slots 1

Ordering Information

7707BPX 2 x 1 Optical Bypass Protection Switch

Ordering Options

Notes Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
+AP+SC SC/APC (Angle Polished)
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes


350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure