PhoneRider ISA

Product availability update.  As of June 1, 2007 ExceleTel has a very limited quantity of MediaPhonics PhoneRider ISA boards available for sale.  These are most appropriate for current users with legacy application needs.  Please call us at +1(919)233-2232 or email us for assistance.

Transitioning to a new device.  ExceleTel can help make your transition to a new voice telephony platform as fast and easy as possible. Please contact us for assistance.

Please note that MediaPhonics, the manufacturer of the PhoneRider product line, has ceased operations.  The information below is provided as a courtesy.  

PhoneRider® ISA is a fully TAPI and Wave compliant single-line telephony board running under Windows 95, 98, NT 4.0, and 2000. PhoneRider® ISA provides leading edge voice and call processing features and a truly integrated foundation for powerful desktop voice and call processing applications.

PhoneRider® Firmware

PhoneRider® Firmware runs on the board's DSP freeing the CPU of the host PC for other tasks. It has three main modules:

  • call progress analysis
  • signal processing
  • echo cancellation

Call Progress Analysis
As the call progresses, Handset on/off hook, DTMFs, Dialtone, Ringback, Connected, Caller ID, Silence, Voice, Busy, fax/modem, SIT events and tones are detected..

Echo Cancellation
PhoneRider® is equipped with three independent device-specific echo cancellation algorithms for each of the Telephone line, Handset and Speaker phone.

PhoneRider® Drivers

PhoneRider® is shipped with it's own Telephony Service Provider (TSP) and Wave driver.  These two drivers provide access to PhoneRider® hardware functions through standard Microsoft application programming interfaces:

  • Telephone API (TAPI)
  • Wave API

All applications using these APIs (including TeleTools) will be operational with the PhoneRider ISA board.


  • Support for all TAPI 3.0 functions including IP telephony
  • Plug and Play compatibility
  • Real time media processing and advanced call processing
  • Simultaneous full-duplex streaming on phone device and line device
  • Local phone support with on/off hook detection and separate streaming
  • Full-duplex high quality speakerphone with echo cancellation
  • Soft switching between handset and speakerphone during call
  • DTMF generation and detection
  • Caller-ID Detection
  • Call Progress Analysis
  • SIT detection
  • Fax/modem detection
  • SoundBlaster compatibility for audio functions off-line
  • Optimized for Plantronics H61 N/A headset
  • US, Canadian, German and Swiss PT approvals

Technical Specifications

Supports Windows 95, 98, NT, 2000
Number of Ports: One
Maximum Boards per Systems: One

On-board Processors, Memory
Main Processor: 33MHz Analog Devices DSP 2181
Memory: 16K x 24bits internal program memory, 16K x 16 bits internal data program

Host Interface
Bus Compatibility: ISA PC AT
Bus Speed: 8 MHz
Base Address: PnP

Telephone Line Interface
Trunk Type: 2 wire analog
Impedance: 600 Ohms (USA)Ring Detection: 22 Vrms minimum/100 maximum, 15 Hz minimum/50Hz maximum
Frequency Response: 300 to 3400 Hz +/-3dB
Connector: RJ-11 4/6

Telephone Set Interface
Impedance: 600 Ohms
Signal/Noise Ratio: 50 dB
Frequency Response: 300 to 3400 Hz +/-3dB
On/Off Hook Detection: Voltage sense
Power Supply: 17V
Power Loss Emergency Switch: Bypass relay

Audio Interface
Line Output Impedance: 47 kOhms
Line Output Signal Range: 1Vpp

Audio Subsystem
Chipset: AD1815JSA Soundcomm (for audio off-line)
Sampling Rate: 4 to 55,2 kHz
Resolution: 16 bits PCM
Chipset: AD1843 (for audio on-line)

Microphone Input
Connector: Mono or stereo 3.5 mm jack socket
Input Impedance: 600 W
Maximum Mic Input Voltage: 200 mV
Minimum Mic Input Voltage: 10mV
Microphone Input Gain: PhoneRider Automatic Gain Control
Echo Cancellation: Auto-regulated

Operating Temperature: 10° to 40° C
Storage Temperature: 5° to 55° C, <80% relative humidity, non-condensing

Form Factor
176 mm (L) x 114 mm (H) x 22 mm (T) (including plastic cover of the DAA)

Regulatory Certification
United States: Complies with FCC Part 15 Class B, FCC Part 68, and UL 1950
Canada: Complies with CS03 Issue 8, and CSA950

PhoneRider® ISA transforms Windows based PCs and telephones into telephony terminals for :

  • Attended desktop PSTN and IP telephony
  • Power dialing
  • Telemarketing
  • Computer Aided Telephone Interviewing
  • Full-duplex Wave record and playback on- and off-line
  • IVR / auto-attendant applications
  • Call logging
  • Industrial facility and equipment monitoring
  • and many more