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Share DSP C549 between Voice termination and transcoding

Ion Cristian Radescu
Level 1
Level 1

‎05-19-2009 12:01 AM - edited ‎03-18-2019 10:21 AM

Hi all,

I wanna share a c549 between transcoding and voice termination.

I know that 1 DSP can handle 4 simultaneous medium complexity calls (e.g. G.711 or G.729a codec) or 2 simultaneous high complexity calls (e.g. G729 or G729b) or 4 transcoding sessions(between any codecs).

I don't know something more granular for sessions calculations(e.g. 240 MIPS for DSP C5510).

So, can somebody tell me if I have 6 timeslots T1 and, let-s say, 1 x PVDM-12, how many transcoding sessions could I have with remaining resources? How do you calculate this?

Many thanks in advance,

Cristian

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Ion Cristian Radescu
Level 1
Level 1

‎05-19-2009 01:49 AM

From my tests I would say that a C549 can not be shared between transcoding and voice termination. So, if we have 6 E1 timeslots we will have 2 C549 DSPs fully charged with voice termination even on the second DSP we have only 2 channels busy with voice termination.

In conclusion, if we have 1 x PVDM-12(3 x C549 DSPs) we can configure 6 timeslots and 4 transcoding sessions.

Can somebody confirm this? I can't find a good doc that stats a C549 can not be shared.

Thanks,

Cristian

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Ion Cristian Radescu
Level 1
Level 1
In response to Ion Cristian Radescu

‎05-22-2009 11:34 PM

Anybody? Anything?

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