[asterisk-users] FSX gateways

[Tom Moore]

Hi guys,
What are some reliable sip to FSX gateways with four ports and eight ports?
I've used some Linksys and Grandstream devices and I find that at
unexplained times there will be echo on the line. Sometimes this happens on
the end where the devices is placed and sometimes this happens on the other
end.
Also are there devices that support codecs such as ilbc or gsm so that I can
put four to eight phones on a dsl line?

Thanks for suggestions.

Tom