ADPCM
The IMG726 is a smPCITM
interface module which performs voice coding and decoding
per the G.726 standard on up to 128 duplex channels.
ADPCM smPCI Module
ADPCM, or Adaptive Differential Pulse-Code Modulation, compresses
64kbps digitized voice down to 16, 24, 32 or 40kbps,
software selectable on a per channel and direction basis.
Data input from the TDM bus timeslots is converted by a
Brooktree BT8110 and is rerouted back through the TDM.
The IMG726-64 handles 64 duplex channels and can be
upgraded in the field to an IMG726-96 or IMG726-128.
Specifications
| Product name |
IMG726
|
| Compression chip |
BT8110
|
| P/N code |
MPG2 |
MPG3 |
MPG4 |
| Channels |
64 |
96 |
128 |
| +5v power (A) |
TBD
|
| Max per V6M6 |
6
|
| V6M6 sites |
any
|
| Max per C6M6 |
6
|
| C6M6 sites |
any
|
| Size (inch) |
2.9 x 2.75
|
| 
