[Asterisk-Users] GS BT102 dual ethernet port -bandwidth impact

[Rich Adamson]

Its a 10 meg "half-duplex" switch in the phone. When the ethernet 
utilization approaches 80% (or more), packets are dropped, impacting the 
voice conversation. What that implies is not connecting a PC to the 
second jack if that PC bursts any significant amount of data traffic.
Nothing more, nothing less.

Michael J. Liberatore wrote:
> The bt102 is a 10megabit switch so I don't get what you are saying? 
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Rich
> Adamson
> Sent: Saturday, March 18, 2006 8:43 PM
> To: Asterisk Users-List
> Subject: [Asterisk-Users] GS BT102 dual ethernet port -bandwidth impact
> 
> FYI for anyone using the dual ethernet ports on a Grandstream BT102.
> 
> I'm using a BT102 connected to an HP2524 10/100 switch, which has an
> asterisk box connected directly to it. No VLANs defined or in use.
> 
> Measured bandwidth:
>   PC -> HP Switch -> Asterisk : actual throughput measured at 94.1 mbps.
> 
>   PC -> BT102 -> HP Switch -> Asterisk : actual measured at 8.86 mbps.
> 
> The second test (through the BT102) was conducted with a g711
> conversation in progress. Audio quality was noticeably impacted
> presumably due to the half duplex support in the BT102. The BT102 was
> running sip v1.0.5.18 firmware.
> 
> The bandwidth tester (older version of NetIQ's QCheck) sent one megabyte
>   bursts of tcp traffic between the two endpoints using 1514 bytes
> packets.
> 
> The tests were run purely to document throughput of the phone when used
> with an attached PC.
> 
> Rich
> 
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