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sanjay.rajdev at feath...
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 Posted: Mon Mar 10, 2008 3:13 pm Post subject: [asterisk-users] Want to know Frequency and lenght of Frame |
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I am planning to write a module to find if a Special Information was detected or not.
Can anyone please help me to figure out the below fields?
1. The Frequency of a frame
2. Length of frame in milliseconds
Thanks in advance.
Regards,
Sanjay. |
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| Posted: Thu Mar 20, 2008 1:54 pm Post subject: [asterisk-users] Want to know Frequency and lenght of Frame |
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sanjay.rajdev at featherstoneinformatics.com wrote:
| Quote: | I am planning to write a module to find if a Special Information was detected or not.
Can anyone please help me to figure out the below fields?
1. The Frequency of a frame
2. Length of frame in milliseconds
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Aren't all the frames in asterisk 20ms long, no exceptions? |
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zoachien at securax.org
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| Posted: Thu Mar 20, 2008 2:30 pm Post subject: [asterisk-users] Want to know Frequency and lenght of Frame |
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Mojo with Horan & Company, LLC wrote:
| Quote: | sanjay.rajdev at featherstoneinformatics.com wrote:
| Quote: | I am planning to write a module to find if a Special Information was detected or not.
Can anyone please help me to figure out the below fields?
1. The Frequency of a frame
2. Length of frame in milliseconds
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Aren't all the frames in asterisk 20ms long, no exceptions?
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Isn't ilbc the exception ?
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Guest
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| Posted: Fri Mar 21, 2008 5:51 pm Post subject: [asterisk-users] Want to know Frequency and lenght of Frame |
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Zoa wrote:
| Quote: | Mojo with Horan & Company, LLC wrote:
| Quote: | Aren't all the frames in asterisk 20ms long, no exceptions?
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Isn't ilbc the exception ?
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Even though the ilbc codec likes multiples of 50 for its frame size (Is
this right?), I was under the impression that asterisk broke everything
down to 20ms slin samples internally, unless it was just directly
bridging two similarly-codeced channels. I would imagine that Sanjay
meant zaptel hardware anyway, as the SIT is an in-band pattern meant for
our ears. (I think that SIP would simply return a cause code
out-of-band describing WHY the call failed, but would not pass any RTP
audio.)
Moj |
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Dan_Austin at Phoenix.com
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| Posted: Fri Mar 21, 2008 8:34 pm Post subject: [asterisk-users] Want to know Frequency and lenght of Frame |
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Mojo wrote:
| Quote: | sanjay.rajdev at featherstoneinformatics.com wrote:
| Quote: | I am planning to write a module to find if a Special Information was detected or not.
Can anyone please help me to figure out the below fields?
1. The Frequency of a frame
2. Length of frame in milliseconds
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Aren't all the frames in asterisk 20ms long, no exceptions?
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1.0 & 1.2 Yes (with the possible exception fo iLBC)
1.4 & 1.6 No The default in 20ms, but can be changed
per user/peer/codec |
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