[asterisk-users] Non-native codecs - MELPe?

[Jeff Brower]

Kyle-

C5441 is a year 2000 DSP chip.  If you're considering the hardware/TI DSP chip path,
C64x or C64x+ series is higher performance (higher channel capacity) and more
relevant in terms of available suppliers, forum tech support, TI support, etc.

-Jeff


Kyle Kienapfel wrote:
> 
> For those codecs an interfaced DSP might be the only option due to
> lack of, or expensive software options.
> 
> I had an easier time looking into MELPe than I did with CVSD, so I
> looked around just a little bit to satiate my curiosity
> 
> https://docs.google.com/viewer?url=http://www.compandent.com/MELPePackageFactSheetPOSIX.pdf
> CPU usage looks a little high. 4% of a 3.2ghz P4 to encode
> 
> How many calls do you think will need to get transcoded at the same
> time at a given server?  With asterisk the g729 codec has hardware and
> software options so people have a choice as to how much g729 they get.
> 
> From http://www.compandent.com/melpe_faq.htm#Q09.6
> 
> 9.6 Q: Do you offer high density MELPe boards (say 100-200 channels)
> for VoIP Servers or Gateways?
> A: Yes, Compandent and one of our partners offer up to 240-port, 6400
> MIPS, DSP PMC (PCI Mezzanine Card) form factor utilizing C5441 DSPs
> with on-board 400 Mhz PowerPC. A fully embedded telephony software
> library is also available for VoIP, V.22 and V.90 Modem, Fax,
> Conferencing, Telephony, MELPe and more. For more details please call
> us or contact us.
> 
> </quote>
> 
> I was all "yea!" until I hit up wikipedia for information on PCI
> Mezzanine cards http://en.wikipedia.org/wiki/PCI_Mezzanine_Card and
> clicked one of the links to a picture, but maybe somebody makes an
> adaptor.
> 
> On Fri, Jun 25, 2010 at 4:07 PM, Kirin, Carol (IS)
> <Carolyn.Kirin at ngc.com> wrote:
> > Has anyone needed a coded that Asterisk does not natively support, such as
> > MELPe or CVSD? If so, did you find a pure software solution and provided
> > that as an addition to Asterisk? Was that solution successful? Has using an
> > I/F card with a DSP proved to be the better solutions? We are beginners with
> > Asterisk so any help/advice on how to best implement non-native Codecs into
> > Asterisk will be welcome.
> >
> > CK