FAQ
What are SIP Methods / Requests and Responses?
SIP uses Methods / Requests and corresponding Responses to establish a call session.
0 comments | ContinuedWhat is T38 fax?
T38 is a protocol that describes how to send a fax over a computer data network. T38 is needed because fax data can not be sent over a computer data network in the same way as voice communication. See How does FAX work in VOIP environments? for more information about this. In essence, with T38 [...]
0 comments | ContinuedWhat is a STUN Server?
A STUN (Simple Traversal of User Datagram Protocol [UDP] Through Network Address Translators [NATs]) server allows NAT clients (i.e. computers behind a firewall) to setup phone calls to a VOIP provider hosted outside of the local network.
0 comments | ContinuedWhat is a SIP-URI?
A SIP URI is the SIP addressing schema to call another person via SIP. In other words, a SIP URI is a user’s SIP phone number. The SIP URI resembles an e-mail address and is written in the following format:
0 comments | ContinuedWhat does ENUM mean?
ENUM stands for Telephone Number Mapping. Behind this ‘abbreviation’ hides a great idea: To be reachable anywhere in the world with the same number – and via the best and cheapest route. ENUM takes a phone number and links it to an internet address which is published in the DNS system.
0 comments | ContinuedWhat are the benefits of an IP PBX / VOIP phone system?
Much easier to install & configure than a proprietary phone system: A software program running on a computer can take advantage of the advanced processing power of the computer and user interface & features of Windows. Anyone with an understanding of computers and Windows can
0 comments | ContinuedWhat is IVR / interactive voice response?
Interactive Voice Response or IVR is a telephone technology that communicates with a caller through configurable voice menus and data in real time. In an IVR system, callers are given the choice to select options by pressing digits.
0 comments | ContinuedWhat are the benefits of an IP PBX?
Much easier to install & configure than a proprietary phone system Easier to manage because of web based configuration interface No need for separate phone wiring
0 comments | ContinuedCan you list all known SIP responses?
1xx = informational responses 100 Trying 180 Ringing 181 Call Is Being Forwarded
0 comments | ContinuedWhat is FOIP – Fax over IP?
FOIP stands for Fax over IP and refers to the process of sending and receiving faxes via a VOIP network. Fax over IP works via T38 and requires a T38 capable VOIP gateway as well as a T38 capable fax machine, fax card or fax software. Fax server software that can talk ‘T38′ allows sending [...]
0 comments | Continued