Compatibility between 32kADPCM (rfc-2422) and Dialogic 8kHz,4bit, ADPCM


Scott Kelly (skelly@vodavi-ct.com)
Wed, 27 Dec 2000 15:12:57 -0500


VPIM folks...

My company is looking into making a VPIM compatible gateway for our voice
mail system. I am having a problem with the sample Audio/32KADPCM messages I
downloaded from the web site. My company's product currently uses Dialogic
hardware. I can record messages at 8kHz, 4 bit sample, ADPCM and play them
back. No problem.

 But the sample messages from the Web site sound like heavy static with a
little voice behind them. I am guessing that the 32k ADPCM format that
Dialogic uses is different than that of VPIM/RFC-2422. Big endian vs little
endian or something.

Can you provide some insight into the problem?

Thanks,
Scott

Scott Kelly
Vodavi-CT
770-662-1500 x221
770-242-1630 - fax

"We're talking technology."



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