Ports used by UsVox Hosted PBX user devicesOur advice is to always disable Router or Firewall ‘SIP ALG’ before you begin to open ports on your network security settings, if your Router or Firewall don’t have any disabling for SIP ALG choices we strongly advise you to contact your Router or Firewall technical support and let them do the work they are expert on this matter.
The following are the ports and protocols that Hosted PBX user devices use. Port numbers and Protocol UDP 5060; TCP 5060, 5061 SIP, SIP TLS UDP 35000-65000(assigned dynamically) RTP, SRTP Links related to this information and they can be helpful to read: http://en.wikipedia.org/wiki/Application-level_gateway http://www.voip-info.org/wiki/view/Routers+SIP+ALG http://www.watchguard.com/help/docs/wsm/11/en-us/content/en-us/proxies/sip/sip_proxy_about_c.html http://www.cisco.com/en/US/docs/ios-xml/ios/ipaddr_nat/configuration/15-mt/nat-tcp-sip-alg.html http://www.juniper.net/techpubs/software/junos-security/junos-security96/junos-security-swconfig-security/sip-alg-understanding.html |