MTPCI Release v2.2.0
Release Notes 12/1/2001

This document contains information not currently available in the manual:

* Supported Platforms
* System Requirements
* General notes
* Firmware updates
* Control panel updates
* Driver updates
* 

* Supported Platforms
PT4
PT8
MTP 4
MTP 8
MT 2X6
MT 1X1

* System Requirements
Intel Pentium 133MHz or better with a minimum of 32MB RAM running Microsoft Windows NT 4.0 (with service pack 4 or higher) or Windows 2000

* General notes
v1.0
- initial build

v1.05
- modified PCI device detection for improved compatibility with other devices

v1.6.2
- all boards in a single system are now set to master by default
- echo cancellation is now enabled by default

v2.0.0
- updated INF file
- updated User's Guide, API Function Reference Manual, and Quick Install Guide for Windows NT
- new Quick Install Guide for Windows 2000 available
- please note that the MTPCI (driver) service can only be started or stopped by a user with local administrator priviledges

* Firmware updates
v1.0
- initial build

v1.6.2
- improved automatic gain control (AGC)
- improved activity detection
- channel counter is now reset after every frame sync

v6.0.3
- improved callerid/fsk detection
- implemented GSM file encoding format
- removed gain from input stream; added fixed-gain mode to AGC to operate on imput to encoders whenever AGC is disabled; replaced separate AGC's for GSM and non-GSM firmware with single AGC implementation

v6.0.b.b
- improved callerid algorithm
- fixed feature to suspend callerid when DTMF detection requires more MIPS
- improved ring generation
- OKI 24 format updated to 600-word buffers

* Control panel updates
v1.0
- initial build

v1.6.2
- fixed bug in default path to firmware file

v2.0.0
- removed UAI mode
- removed path to additional firmware file
- redesigned system and board section

v2.2.0
- recompile with updated nvdspdll.lib

* Driver updates
v1.0
- initial build

v1.6.2
- corrected interrupt sharing problem with non-MUSIC Telecom cards
- CPM table default values modified to enhance CPM detection
- fixed streaming stutter and overall streaming functionality
- fixed nvplayfileindex() to use the default file type on initial call of nvplayfileindex()
- added functions to transmit fsk callerid signals to stations
- disabled callerid detection on stations
- fixed start-voice startcontrol
- buffers fill using FIFO to continue updating until vox is detected
- added alert_tone option to record streaming
- fixed streaming termination events maxtime and maxbytes to work more efficiently
- improved arbitration performance because host was holding the PCI bus for an extended period of time, causing the dsp to miss interrupts

v2.0.0
- fixed low volume conferencing issue
- implemented timestamp variable
- fixed audio jack for MT 1X1 and MTP 2
- added Microsoft GSM 610 with/without header support for nvplayfile(), nvrecfile(), nvplaybuffer() and nvrecbuffer()
- changed PCI write mode to wait until space is available in FIFO instead of disconnecting
- added board model numbers for PT4 and PT8 cards

v2.2.0
- a dtmf digit can now be received after callerid
- fixed recording with max time and alert tone (max time > alert tone interval)
- increased duration for ring on station channels
- when recording with Microsoft GSM with header and using start on loop voice, the recording is no longer corrupted when the recording is delayed enough to fill up the pre-trigger buffer
- nvgetboardinfo() and nvgetserialnumber() now return proper error code (nv_ret_invalid_param) if an invalid board is passed
- play streaming now restarts even if you delay sending packets

* 

