QoS

Quality of Service (QoS)

For an optimal experience we recommend the following Quality of Service settings be done on your firewall, you do not have to do all of these settings but we have listed them in order of impact:

• Mandatory setting for phones to work:
  • SIP ALG Policy: Disabled
• Optional QoS settings to improve quality:
  • Differentiated Services Code Point (DSCP):  46
  • Per-Hop-Behavior (PHB): EF
  • Layer 2 Voice Class of Service (CoS): 5
• If you have an older router that does not support QoS then sometimes you can define bandwidth shaping priority by traffic ports as follows:
  • 5060 (UDP and TCP)
  • 5061 (TCP)
  • 49152-64512 (UDP)
• Do you block outbound traffic to IP addresses in China?  If you are using any of the phone brands listed below, please whitelist their provisioning server IP address accordingly to permit auto provisioning.   
  • Fanvil:  fdps.fanvil.com (119.28.67.228)
  • Yealink: rps.yealink.com (52.71.103.102)
  • Snom:  sraps.snom.com  (13.33.165.11)
  • Grandstream:  fm.grandstream.com (35.82.75.208)
• Do you block outbound traffic  to IP addresses in Canada?    If you do, please ping the IP address of  the user portal that  has been assigned to your account to establish which server of ours you are on and then  whitelist our IP address  accordingly.
  • *.moderntelecom.ca   (where * is a sub domain assigned to your user portal you must ping to see which server you are on, for example myaccount.moderntelecom.ca will resolve to an IP address 64.34.xxx.xxx which you must whitelist to allow your phones to communicate our server)
  • If you do not know your user portal, just ask us and we will let you know your user portal and server IP address.