Teliax Support

Faxing over VoIP is a challenge. In reality, there are a number of reasons, and no certain universal cures. VoIP networks are designed to do a good job with...

The amount of bandwidth used for each call depends mostly on your selection of codec. The following codecs and their approximate bandwidth utilization (incl...

Linksys has a line of consumer-grade ATAs (Analog Telephone Adapters) that are easy to deploy. This article is about setting them up with Teliax. Note - Mo...

What's a SIP ALG? Many of today's commercial routers implement SIP ALG (Application Layer Gateway), coming with this feature enabled by default. Wh...

It worked yesterday. Calls were coming in and going out just fine.  Now, all of a sudden, it’s stopped working (or The Quality Is Bad, or They Can’t Hear Me...

Here's a few things you can try on your own to get your PBX back up and running. Is your account active? Reload your PBX or powercycle your S...

DNIS, or Dialed Number Information Service lets your PBX know which number someone called in on. It's useful if you have multiple phone numbers belongin...

DTMF allows key-presses on inbound and outbound calls to be recognized by a phone system capable of decoding and registering these tones. This is useful for...

How Caller ID Works Most phone subscribers are familiar with the concept of Caller ID, also known as CNAM (Caller ID Name). At the very least, most phone...

The SonicWALL security appliance allows VoIP phone and applications to be deployed behind the firewall. The VoIP > Settings page includes the settings fo...