I am in a remote office with an i2004 phone connecting through a Contivity
251 vpn box.
I cannot get resolution from the network people on QoS. If I send an email while on the phone, the data traffic overwhelms my voice traffic and my upstream call quality drops to nothing. I can hear the other party fine, but they cannot understand anything I say. The network person changed my codec to 711 which has helped a little. I have a dsl modem with 256k upstream. The call is supposed to require 80k.
My suspicion is that the QoS marking and prioritization is not enabled. I have not been able to determine where these settings are - in the phone or in the 251 box, so I cannot see if they are enabled.
The Nortel literature indicates that prioritization should be possible with DiffServ marking,
I would appreciate any suggestions.
Regards, Scott