If I relay through my Cisco 7940/7960, does it do QOS, even with a dumb switch? I know you can set quality/qos but only if you have a layer2/layer3 switch that supports the tagging. A simple little linksys 5 port switch wouldn't know about QOS, it'd give everybody equal priority. If a computer plugged into the phone, and the phone into the dumb 5 port switch and then to the internet, and the computer started uploading a 3mb file, if the end user picked up the receiver and placed a call, would that upload slow down in order to give the phone perfect call quality?
Nope. And even if did, your QoS tags would be ignored once it hit the Internet. Deon Rodden wrote:> If I relay through my Cisco 7940/7960, does it do QOS, even with a dumb > switch? > > I know you can set quality/qos but only if you have a layer2/layer3 > switch that supports the tagging. A simple little linksys 5 port switch > wouldn't know about QOS, it'd give everybody equal priority. If a > computer plugged into the phone, and the phone into the dumb 5 port > switch and then to the internet, and the computer started uploading a > 3mb file, if the end user picked up the receiver and placed a call, > would that upload slow down in order to give the phone perfect call > quality? > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > >
> If I relay through my Cisco 7940/7960, does it do QOS, even with a dumb > switch? > > I know you can set quality/qos but only if you have a layer2/layer3 > switch that supports the tagging. A simple little linksys 5 port switch > wouldn't know about QOS, it'd give everybody equal priority. If a > computer plugged into the phone, and the phone into the dumb 5 port > switch and then to the internet, and the computer started uploading a > 3mb file, if the end user picked up the receiver and placed a call, > would that upload slow down in order to give the phone perfect call quality?In very general terms for a small network such as yours, QoS at the switch level will no significant impact as the bandwidth is more then sufficient to handle the traffic. QoS 'can' have an impact on any box (eg, DSL modem, Router) where the bandwidth is somewhat limited. However, to be usefull, the DSL modem or router at your end _and_ your ISP's location would have to be configured to support QoS. As far as other Internet links, contrary to popular belier there are some providers that have implemented QoS in their facilities. Our company has helped several, and others are asking about it. Its probably not all that popular yet, but at least moving in a positive direction. Rich
Actually, atleast on the SCCP load, the phone would take precedence over the computer plugged into the phone. Anything else plugged into the switch would be able to disrupt the call, however, and, as Rich said, both ends of your upstream connection would need to prioritize the voip traffic to get a reliable QoS. That applies, of course, only if you are terminating over the internet. If you are terminating to a local FXO the gateway/* box may need to prioritize the traffic. Chris On Fri, 17 Sep 2004 14:32:33 -0400, Deon Rodden <drodden@webunited.net> wrote:> If I relay through my Cisco 7940/7960, does it do QOS, even with a dumb > switch? > > I know you can set quality/qos but only if you have a layer2/layer3 > switch that supports the tagging. A simple little linksys 5 port switch > wouldn't know about QOS, it'd give everybody equal priority. If a > computer plugged into the phone, and the phone into the dumb 5 port > switch and then to the internet, and the computer started uploading a > 3mb file, if the end user picked up the receiver and placed a call, > would that upload slow down in order to give the phone perfect call quality? > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >