[Asterisk-Users] zaphfc - hfc pci based ISDN card : point2point & DDI

[Tomaz]

ok,

 here is something to add .. correct me if I'm wrong!

tomaz


Philipp von Klitzing wrote:

>Hi!
>
>  
>
>>It looks like there are three methods of using HFC-S based ISDN BRI
>>cards with *. Capi (via capi.conf), zaphfc (via zapata.conf), and
>>isdn4linux (via modem.conf). Why, and which one is better and for which
>>reasons? 
>>    
>>
>-
>  
>
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>i4l: Trouble with outgoing DTMF (not working), less ISDN features than 
>chan_capi, known to be not very stable/reliable (?works only with HiSax 
>cards?), reportedly messy code, issues with echo and latency
>
>  
>
--------------------------------------------------------------------------------------------------------

>chan_capi: more features (early dial, call deflection, ISDN hold & 
>retrieve etc), stable, comes with echosquelch, works only with cards that 
>have CAPI driver support; far more popular among Asterisk users compared 
>to isdn4linux; can't detect if another application outside Asterisk is 
>already using a specific ISDN channel (?)
>  
>
-DDI - p2p point2 point is NOT working
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>zaphfc: works only with HFC cards, can also be used in NT mode (so that 
>you can connect an ISDN PBX or an ISDN phone to Asterisk), works as ZAP 
>channel and thus comes along with all the usual ZAP features (echo 
>cancellation, ZAP timer, but also ZapBarge etc)
>
>  
>
DDI -p2p point2point is working


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>chan_misdn: very new; needs misdn kernel module or kernel 2.6.x; not 
>widely used (yet)
>
>  
>

>Cheers, Philipp
>
>
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