[Asterisk-Users] zaphfc sound problems

[Tim Robinson]

Hi

I recommend you abandon the old card with the CAPI drivers and purchase 
a second HFC card.  You can get them for around £10/EUR15 approx if you 
shop around on the net.  You need to use zaphfc and the native zaptel 
and libpri drivers.  You will need the bristuff from

http://www.junghanns.net/asterisk/downloads/bristuff-0.2.0-rc2b.tar.gz

which has a script to download and install the whole thing automatically.

The HFC card will generate 8000 interrupts per second.  it is normal 
operation.  Do make sure you are not sharing these IRQs or you will have 
problems.

I have 3 HFC cards running in an Celeron 400.

Rgds
Tim

Thomas Jagoditsch wrote:
> hi list.
> 
> after my unsuccessfull experiences with mISDN i tried again to implement 
> a zaphfc based solution.
> problem is: sound on calls via capi is stuttering/broken and therefore 
> unuseable.
> 
> my conf:
> - cel 1300, 256mb ram
> - avm b1 via capi connected to my outgoing ISDN
> - acer surf pci via zaphafc and crosslink cable with termination as 
> internal bus
> - siemens gigaset 3035 as internal phone
> - various sip-phones on my pc to test
> 
> software versions:
> - gentoo with kernel 2.6.9
> - bri-stuff.0.1.0-RC4a installed with
>    cvs -z9 co -D '2004/08/21 21:34:58' asterisk libpri zaptel
> 
> all worked fine and this was the first time i could get the gigaset to 
> talk to asterisk (in contrast to mISDN).
> 
> but ... the sound problem:
> ive got stuttering noises, voice is almost not understandable in some 
> cases - but in every case ;-(
> 
> symptoms:
> - calls form gigaset to asterisk (demo,menu etc) are ok
> - calls from gigaset via asterisk to pstn have stuttering
> - calls from sip via asterisk to pstn are ok
> - calls from pstn to asterisk (demo, menu etc) have stuttering
> - calls from pstn via asterisk to gigaset have stuttering
> - calls from pstn via asterisk to sip are ok
> 
> what me stikes here is that you cant find a definitive suspect here.
> zaphfc itself seems to be ok - demo and menu sound are ok and otoh i get 
> problems when zaphfc is out of the game - like calling asterisk alone 
> from pstn.
> but capi itself works - at least when i use sip to call out.
> ive got to stop scratching my head about this before i loose to much 
> hair ...
> 
> i googled around and found no solution. what i tried:
> - the hdparm thing
> - switching apci/acpi
> - changing resitors for termination of the internal bus (100/50 ohms) or 
> remove termination completely
> 
> one thing that makes me curious are interrupts:
> 
>> Sat Nov 20 13:49:30 CET 2004
>>            CPU0
>>   0:    4270237          XT-PIC  timer
>>   1:         44          XT-PIC  i8042
>>   2:          0          XT-PIC  cascade
>>   5:   32813694          XT-PIC  zaphfc
>>   8:          2          XT-PIC  rtc
>>  10:      16843          XT-PIC  b1pci-b000
>>  11:      16563          XT-PIC  uhci_hcd, uhci_hcd, CMI8738, eth0
>>  14:       1822          XT-PIC  ide0
>>  15:         17          XT-PIC  ide1
>> NMI:          0
>> LOC:          0
>> ERR:          0
>> MIS:          0
>> Sat Nov 20 13:49:40 CET 2004
>>            CPU0
>>   0:    4280248          XT-PIC  timer
>>   1:         44          XT-PIC  i8042
>>   2:          0          XT-PIC  cascade
>>   5:   32893770          XT-PIC  zaphfc
>>   8:          2          XT-PIC  rtc
>>  10:      16844          XT-PIC  b1pci-b000
>>  11:      16569          XT-PIC  uhci_hcd, uhci_hcd, CMI8738, eth0
>>  14:       1822          XT-PIC  ide0
>>  15:         17          XT-PIC  ide1
>> NMI:          0
>> LOC:          0
>> ERR:          0
>> MIS:          0
> 
> 
> 
> there was no activity on the system and zaphfc produces interrupts like 
> crazy. i found one post describing the same thing - but the thread 
> concludes without solution ...
> 
> someone got ideas ?
> 
> or maybe i could try another approach:
> has anyone got a similar working configuration (isdn external & internal 
> via capi and/or zaphfc and/or mISDN) ?
> which hardware / software do it run on ?
> 
> wbr.tja...
> 
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