Related Articles
Why can’t I register my VoIP device?
Firewalls and Interfering routers are the most common cause of SIP registration failure with your VoIP device where the firewall/router blocks incoming traffic required by our SIP registration process. Remember that the process of any SIP ...
NAT and SIP ALG
NAT Traversal NAT can interfere with SIP and RTP by changing the ports on the way through. To counter we enable NAT traversal by default therefore communicating directly to the port that sent us the original RTP traffic (instead of sending back to ...
Tech Connections generic SIP settings for connecting a SIP compliant device to our service
Customers with their own SIP enabled phone, gateway or PBX are free to use this to connect to Tech Connections's service. The device must be SIP v2 compatible. Refer to the settings below for a guide to how you should configure your device to connect ...
How to Setup Faxmail
Quick Guide – Sending a fax Our fax-mail service allows “approved” email addresses to send faxes via our service. Before you can send or receive faxes follow the Quick Guide below to configure approved senders & receivers. Fax type: We support PDF, ...
Disabling SIP Application Layer Gateway (ALG) functionality
If you are experiencing one way voice particularly on incoming calls the most probable cause is SIP ALG. While originally designed to resolve a NAT related problems, with no standard implementation many routers and software based firewalls corrupt ...