[Asterisk-Users] ISDN, AVM C4, HFC-cards and echo

[Peer Oliver Schmidt]

Hello,

I've been using * for quite a while using AVM C4 card and a few 
Grandstream Budgetone 102 hard phones plus couple of HandyTone 286.

Echo is a big problem. I am getting used to it, but some users complain.

Anyone has experience w/ regards to echo comparing the AVM C4 with two 
HFC-cards? Before shelling out time and money, maybe someone else 
already has done so, and could tell me if it is wortwhile. I only need 
four B-channels, so two HFC cards should be all I need.

Any help, pointers and tips are greatly appreciated.

Thanks for your time.

rgds
pos

PS: Current CAPI.CONF settings:
[general]
nationalprefix=0
internationalprefix=00
rxgain=0.8
txgain=0.8

[interfaces]
msn=123456
echosquelsh=1
incomingmsn=*
controller=1
softdtmf=0
context=default
;echocancel=yes
;echotail=64
;deflect=12345678
devices=2
callgroup=1