Rich Adamson wrote: [snip]
> The x100p (and presumably the clones) have an integrated circuit on > the board that was manufactured for use in the US with 600 ohm pstn > lines. The chip cannot be changed to any other impedance. However, > there can be many different sources for the echo and impedance > matching is only one of them. Others include: > - incorrect * zapata.conf parameters > - poorly engineered motherboards (eg, poor PCI bus, interrupt > latency) > [snip] There are two types of alternative cards (not starting a discussion on who made it first!), one called AMI-IA92 (Si3021/Si3012/MD3200) with a FCC approval and one called AMI-IE92 (Si3021/Si3014/MD3200) with a R&TTE approval. The AMI-IE92 have additional components on board for setting AC real/complex termination as well as DC termination (Japan Mode/FCC Mode/CTR21 Mode). Both card types are compatible but the wcfxo driver does not utilise the additional settings on the AMI-IE92 card. Source: Chipsets (login required) https://www.mysilabs.com/public/documents/tpub_doc/dsheet/Wireline/Silicon_DAA/en/si3034.pdf https://www.mysilabs.com/public/documents/tpub_doc/dsheet/Wireline/Silicon_DAA/en/si3035.pdf Amigo Communications product sheet (www.amigocom.com) http://61.31.72.100/amigocom/products/ami_ia92_ie92.htm /Soren _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
