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seandarcy2 at gmail.com
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 Posted: Fri Apr 04, 2008 3:23 pm Post subject: [asterisk-users] howto debug bad iax voice quality? |
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I'm set up to call 3 digit extensions at the office ( running 1.4.13)
from home ( 1.6.0 beta7) over iax. 1 out of 3 times the call breaks up,
but only in the home -> office direction. office -> home always sounds good.
If it were a poor internet connection, I'd expect both sides of the
conversation to be poor. Not surprisingly, each side can ping the other
in the same time - 25-30ms. Both servers have the iax jitterbuffer on.
I could always use a lower bit-rate codec ( now using mu-law ), but I
don't see how it could be a "one way" bit-rate issue.
Any suggestions appreciated.
sean |
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JBeaman at good-sam.com
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| Posted: Fri Apr 04, 2008 3:36 pm Post subject: [asterisk-users] howto debug bad iax voice quality? |
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John Beaman
Telecom Specialist II
Voice Telecommunications Services Department.
Good Samaritan National Campus
605-362-3331
| Quote: | | Quote: | | Quote: | seandarcy2 at gmail.com 4/4/2008 3:23:49 PM >>>
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I'm set up to call 3 digit extensions at the office ( running 1.4.13)
from home ( 1.6.0 beta7) over iax. 1 out of 3 times the call breaks up,
but only in the home -> office direction. office -> home always sounds good.
If it were a poor internet connection, I'd expect both sides of the
conversation to be poor. Not surprisingly, each side can ping the other
in the same time - 25-30ms. Both servers have the iax jitterbuffer on.
I could always use a lower bit-rate codec ( now using mu-law ), but I
don't see how it could be a "one way" bit-rate issue.
Any suggestions appreciated.
sean
_______________________________________________
Sean,
Broadband connections are almost always asynchronous, which means your download speed is considerably higher than upload speed. With some or our remote workers they were getting 1.5 Mbps download but only 125 Kbps upload speed! We ended up having to upgrade their connection to a "business class" connection, but upload speed was still only ? of the download speed. You can check your speed both directions with a speed test from a site such as: http://www.speakeasy.net/speedtest/
HTH |
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seandarcy2 at gmail.com
Guest
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| Posted: Fri Apr 04, 2008 8:43 pm Post subject: [asterisk-users] howto debug bad iax voice quality? |
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John Beaman wrote:
| Quote: |
John Beaman
Telecom Specialist II
Voice Telecommunications Services Department.
Good Samaritan National Campus
605-362-3331
| Quote: | | Quote: | | Quote: | seandarcy2 at gmail.com 4/4/2008 3:23:49 PM >>>
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I'm set up to call 3 digit extensions at the office ( running 1.4.13)
from home ( 1.6.0 beta7) over iax. 1 out of 3 times the call breaks up,
but only in the home -> office direction. office -> home always sounds good.
If it were a poor internet connection, I'd expect both sides of the
conversation to be poor. Not surprisingly, each side can ping the other
in the same time - 25-30ms. Both servers have the iax jitterbuffer on.
I could always use a lower bit-rate codec ( now using mu-law ), but I
don't see how it could be a "one way" bit-rate issue.
Any suggestions appreciated.
sean
_______________________________________________
Sean,
Broadband connections are almost always asynchronous, which means your download speed is considerably higher than upload speed. With some or our remote workers they were getting 1.5 Mbps download but only 125 Kbps upload speed! We ended up having to upgrade their connection to a "business class" connection, but upload speed was still only ? of the download speed. You can check your speed both directions with a speed test from a site such as: http://www.speakeasy.net/speedtest/
HTH
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I have a dsl 3m/512k line. speedtest shows 2500/400. I'm not uploading
anything. I don't use my home machine as an open server. So 400k should
be plenty for one voip connection and the miscellaneous chirps.
sean |
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stotaro at totarotechn...
Guest
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| Posted: Fri Apr 04, 2008 11:53 pm Post subject: [asterisk-users] howto debug bad iax voice quality? |
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On Fri, Apr 4, 2008 at 9:43 PM, sean darcy <seandarcy2 at gmail.com> wrote:
| Quote: | John Beaman wrote:
| Quote: |
John Beaman
Telecom Specialist II
Voice Telecommunications Services Department.
Good Samaritan National Campus
605-362-3331
| Quote: | | Quote: | | Quote: | seandarcy2 at gmail.com 4/4/2008 3:23:49 PM >>>
|
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I'm set up to call 3 digit extensions at the office ( running 1.4.13)
from home ( 1.6.0 beta7) over iax. 1 out of 3 times the call breaks up,
but only in the home -> office direction. office -> home always sounds good.
If it were a poor internet connection, I'd expect both sides of the
conversation to be poor. Not surprisingly, each side can ping the other
in the same time - 25-30ms. Both servers have the iax jitterbuffer on.
I could always use a lower bit-rate codec ( now using mu-law ), but I
don't see how it could be a "one way" bit-rate issue.
Any suggestions appreciated.
sean
_______________________________________________
Sean,
Broadband connections are almost always asynchronous, which means your download speed is considerably higher than upload speed. With some or our remote workers they were getting 1.5 Mbps download but only 125 Kbps upload speed! We ended up having to upgrade their connection to a "business class" connection, but upload speed was still only ? of the download speed. You can check your speed both directions with a speed test from a site such as: http://www.speakeasy.net/speedtest/
HTH
|
I have a dsl 3m/512k line. speedtest shows 2500/400. I'm not uploading
anything. I don't use my home machine as an open server. So 400k should
be plenty for one voip connection and the miscellaneous chirps.
sean
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Try SIP and see if your problem goes away. My guess is it will.
Thanks,
Steve Totaro |
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