[Freeswitch-users] cannot make call, error INCOMPATIBLE_DESTINATION

Thu Jun 6 18:52:16 MSD 2013

Maybe. But the ptime will have a minimum value and possibly need to be
multiples of a value. The allowable ptimes are codec-dependant. 5ms may
well be too low to be allowable.

You can specify it using a @5i suffix in your codec preferences to override
the default.

But I would NOT recommend 5ms.... It refers to how long a sample to put in
a single RTP frame (packet). Lower values mean you lose less audio data if
you drop a packet but also mean you're sending more packets. Every packet
has IP + UDP + RTP headers, so has a certain amount of overhead. There's a
sweet spot between efficient bandwidth use and not losing too much data if
packets are lost. With a 5ms ptime you're going to have a massive amount of
overhead which isn't justified - the packets might well contain more header
data than audio data. If you're on a slow connection you might even find
you start getting packet loss you don't otherwise get because of the extra
bandwidth being consumed by the headers.

I would recommend changing the setting on the client instead to use 20ms.

-Steve

On 6 June 2013 12:57, Khue Nguyen Minh <khuenm at vega.com.vn> wrote:

> Can I config ptime of FS to 5?
>
>
> 2013/6/6 Steven Ayre <steveayre at gmail.com>
>
>> Tell your SIP client to use a ptime of 20ms
>>
>>
>>
>> On 6 June 2013 12:04, Khue Nguyen Minh <khuenm at vega.com.vn> wrote:
>>
>>> Hi Antonio,
>>>
>>> How I can fix it?
>>>
>>> Khue.
>>>
>>>
>>> 2013/6/6 Antonio Teixeira <eagle.antonio at gmail.com>
>>>
>>>>  Hello.
>>>>
>>>> There is a mismtach on the ptime
>>>> http://wiki.freeswitch.org/wiki/Codecs
>>>>
>>>>
>>>>
>>>> PCMU:0:8000:*5*:64000
>>>>
>>>> PCMU:0:8000:*20*:64000
>>>>
>>>> Antonio
>>>>
>>>>
>>>> On 6/6/13 11:12 AM, Khue Nguyen Minh wrote:
>>>>
>>>> Hi All,
>>>>
>>>>  I'm using FS to receive call forward from GMSC. But, I have
>>>> error INCOMPATIBLE_DESTINATION when new incoming call. This is log from
>>>> fs_cli, please solve for me.
>>>>
>>>>  Audio Codec Compare [PCMA:8:8000:5:64000]/[G722:9:8000:20:64000]
>>>> Audio Codec Compare [PCMA:8:8000:5:64000]/[PCMU:0:8000:20:64000]
>>>> Audio Codec Compare [PCMA:8:8000:5:64000]/[PCMA:8:8000:20:64000]
>>>> Audio Codec Compare [PCMA:8:8000:5:64000]/[GSM:3:8000:20:13200]
>>>> Audio Codec Compare [AMR-WB:101:8000:5:0]/[G722:9:8000:20:64000]
>>>> Audio Codec Compare [AMR-WB:101:8000:5:0]/[PCMU:0:8000:20:64000]
>>>> Audio Codec Compare [AMR-WB:101:8000:5:0]/[PCMA:8:8000:20:64000]
>>>> Audio Codec Compare [AMR-WB:101:8000:5:0]/[GSM:3:8000:20:13200]
>>>> Audio Codec Compare [PCMU:0:8000:5:64000]/[G722:9:8000:20:64000]
>>>> Audio Codec Compare [PCMU:0:8000:5:64000]/[PCMU:0:8000:20:64000]
>>>> Audio Codec Compare [PCMU:0:8000:5:64000]/[PCMA:8:8000:20:64000]
>>>> Audio Codec Compare [PCMU:0:8000:5:64000]/[GSM:3:8000:20:13200]
>>>> Substituting codec PCMU at 20i@8000h
>>>> No audio codec available
>>>> No 2833 in SDP.  Disable 2833 dtmf and switch to INFO
>>>> Send signal sofia/internal/963728839 at x.x.x.x [BREAK]
>>>> (sofia/internal/963728839 at x.x.x.x) Callstate Change RINGING -> HANGUP
>>>> Hangup sofia/internal/963728839 at x.x.x.x [CS_EXECUTE]
>>>> [INCOMPATIBLE_DESTINATION]
>>>> Send signal sofia/internal/963728839 at x.x.x.x [KILL]
>>>> Send signal sofia/internal/963728839 at x.x.x.x [BREAK]
>>>> sofia/internal/963728839 at x.x.x.x skip receive message
>>>> [APPLICATION_EXEC_COMPLETE] (channel is hungup already)
>>>> (sofia/internal/963728839 at x.x.x.) State EXECUTE going to sleep
>>>> (sofia/internal/963728839 at x.x.x.x) Running State Change CS_HANGUP
>>>> (sofia/internal/963728839 at x.x.x.x) State HANGUP
>>>> Channel sofia/internal/963728839 at x.x.x.x hanging up, cause:
>>>> INCOMPATIBLE_DESTINATION
>>>> Responding to INVITE with: 488
>>>> sofia/internal/963728839 at x.x.x.x Standard HANGUP, cause:
>>>> INCOMPATIBLE_DESTINATION
>>>>
>>>>  Brs,
>>>> Khue Nguyen.
>>>>
>>>>
>>>> _________________________________________________________________________
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>>>>
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>>
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>>
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>
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
>
> 
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