[Asterisk-Users] MTU and Voice Delay (latency??)

[Rich Adamson]

Geoff Manning wrote:
> Rich Adamson wrote:
> 
>> What happens if you set the 3com AND Speedtouch to "full duplex"?
>>
> 
> Setting both to Full Duplex (10 or 100) shuts the port on the 3COM switch
> down!

Sounds like you're getting closer to the root cause. Now try using a 
different switch to see if the issue follows the switch or the Speedtouch.