The advantages of VoIP technology are the follows

• VoIP systems are able to detect and process touch tones and DTMF responses
• They can be automated easily
• They are able to detect when the phone has been picked up and messages are played only after this detection
• They allow to use more than one codec
• More than one file format can be used with these systems
• They are much more flexible than hardware based solutions

VoIP in the LAN

A Local Area Network (LAN) supplies networking capability to a group of computers in close proximity to each other such as in an office building, a school, or a home. LAN is your company's inside network connection. From this article you can get to know VoIP technology's greatest advantages in LAN environment.

VoIP WAN

A Wide Area Network (WAN) is a geographically dispersed telecommunications network. The term distinguishes a broader telecommunication structure from a local area network (LAN). A wide area network may be privately owned or rented, but the term usually connotes the inclusion of public (shared user) networks.

VoIP-PSTN connection

In VoIP, every phone number has an IP address to which it maps. Each time a device (PC, IP phone, ATA etc.) engages in a VoIP call, its IP address is translated into the phone number, which is then handed over to the PSTN network. This is analogous to the way web addresses (domain names) and email addresses are mapped to IP addresses.

VoIP in mobile networks

One implementation turns the mobile device into a standard SIP client, which then uses a data network to send and receive SIP messaging, and to send and receive RTP for the voice path. This methodology of turning a mobile handset into a standard SIP client requires that the mobile handset support, at minimum, high speed IP communications.

Another implementation of mobile integration uses a softswitch like gateway to bridge SIP and RTP into the mobile network's SS7 infrastructure. In this implementation, the mobile handset continues to operate as it always has (as a GSM or CDMA based device), but now it can be controlled by a SIP application server which can now provide advanced SIP based services to it.

VoIP on the Internet

VoIP technology is related to Internet technology, as VoIP uses Internet Protocol for establishing communication between two (or more) parties. It is also a very versatile technology, being able to make calls between PCs, landline and mobile phones - in any set-up of the three.

Peer to peer VoIP connections

A peer-to-peer VoIP call occurs when two VoIP phones communicate directly over IP without IP PBXs between them. A peer-to-peer call can be initiated directly, by calling a phone’s SIP URI, or indirectly by dialing a phone number. A peer-to-peer call will only be established when a phone number is dialed if both phones share an IP PBX. For an audio call, there is no difference (in end user experience) between a peer-to-peer call and one that uses an IP PBX.

Hardware requirements:

1 GHz or faster processor
1 GB RAM (32-bit) || 2GB RAM (64-bit)
1 GB free disk space

Operating System:

Microsoft Windows Server 2022
Microsoft Windows Server 2019
Microsoft Windows Server 2016
Microsoft Windows 2008/2008 R2
Microsoft Windows Vista
Microsoft Windows 7
Microsoft Windows 8
Microsoft Windows 10
Microsoft Windows 11
Microsoft Windows 2012/2012 R2

Developer environment:

Microsoft Visual Studio 2010/2012/2013/2019/2022
Microsoft .Net Framework 3.5 or 4.0
Microsoft Silverlight 4 (for webphone development)
Adobe Flash Builder 4.5 (for webphone development)
Adobe Flex SDK 4.5.1 (for webphone development)