Hello,
I have a weird problem. My Cisco Small Business SG 300 switches don't play nice with our Allworx Sip phones. The quality is downright bad. If I first connect the phone to another switch (adtran Nvanta) or dumb netgear unmanaged switch then the call quality is just fine. As the traffic is passing through the cisco eventually I don't understand why the quality improves.
Anyone have any ideas on how to solve this problem?
Thanks
I think it might be the Default QOS settings. I have disabled QOS to see if that make it better or worse.
There may be a few issues here but try set the voice vlan id,:
(config)#voice vlan id XXX
(config)#voice vlan state auto-enabled
(config)#interface range fax-xx
(config-if-range)#switchport trunk native vlan XXX
(config-if-range)#switchport trunk allowed vlan add XXX
See more at: https://supportforums.cisco.com/discussion/11380886/need-help-configuring-voice-vlan-sg300#sthash.HbowQPtP.dpuf
Cordially,
Ronnie Wong
Edutainer Manager, ITProTV
*if the post above has answered the question, please mark as solved.
**All "answers" and responses are offered "as is" and my opinion. There is no implied service, support, or guarantee by ITProTV.
