IDC Modems |
Most IDC modems are built on a Lucent (AT&T) chip set and include IS-101 command set, excluding VR models, which include Rockwell chip set.
Method | Bit Depth | Sampling Frequencies | Comment |
---|---|---|---|
PCM 16-bit linear | 16 | 7200, 8000, 11025 | The best sound quality |
PCM 8-bit linear | 8 | 7200, 8000, 11025 | Very good sound quality |
IMA ADPCM (Intel/DVI) | 4 | 8000 | Good sound quality |
A-law PCM 8 | 8 | 8000 | Very good sound quality |
u-law PCM 8 | 8 | 8000 | Very good sound quality |
Method | Bit Depth | Sampling Frequencies | Comment |
---|---|---|---|
PCM 8-bit unsigned | 8 | 7200 | Very good sound quality |
Rockwell ADPCM | 4 | 7200 | Good sound quality |
One of the most interesting things about IDC modems is that they're able to emulate Bellcore (American) Caller ID behavior after Russian ANI. Only voice models, including IDC BXLV (IDC 2814 Voice) and IDC 2814/VR modems, include this feature. All other (non-voice) models include Hardware Caller ID.
Please visit an official Inpro support site: