I would like to suggest using any managed switch and hard setting the ports to 100/full

I have found that the auto negotiation algorithm is generally to blame on many switches.

As an example, connecting a cisco router to a netgear/dlink/3com/etc will geneerate errors on the cisco interface. connecting cisco to cisco does not. connectig netgear/dlink etc does not.

But disabling auto makes all play nice together.


On May 26, 2006, at 7:38 AM, Rich Adamson wrote:

Remco Barende wrote:
On Fri, 26 May 2006, Dave Cotton wrote:
On Fri, 2006-05-26 at 10:11 +0200, Remco Barende wrote:

Thanks for your input!

Previously I was using Nortel 10/100 switches, I replaced them some
weeks ago with 3C16479 gbit switches. The phones are connected directly to the gbit switches. By coincidence I dit notice on one phone that in a split second a message appeared 'Ethernet cable disconnected'. Because I have cable unplug set to ignore the conversation was not interrupted and
the conversation could continue.

But that still doesn't solve the occasional lockup.

Looks like you're getting somewhere now. That was my real complaint "xyz sucks" helps no one. As I said in my reply I've never had such problems
with SNOM, perhaps it's because I've always used decent switches.
You mean that 3Com switches are not to be regarded as decent switches? At least Snom could have put some remark then that you need a certain brand of switches. If 3Com is not good enough for the phones I would have bought different phones.

Blaming the 3com switch is very likely to be the wrong root cause. High probability the 3com was not configured properly for the phone.


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