What is an IP PBX ?

An IP PBX is a complete telephony system that provides telephone calls over IP data networks. All conversations are sent as data packets over the network.

The technology includes advanced communication features but also provides a significant dose of worry-free scalability and robustness that all enterprises seek. The IP PBX is also able to connect to traditional PSTN lines via an optional gateway - so upgrading day-to-day business communication to this most advanced voice and data network is a breeze!

Enterprises don’t need to disrupt their current external communication infrastructure and operations. With IP PBX deployed, an enterprise can even keep its regular telephone numbers. This way, the IP PBX switches local calls over the data network inside the enterprise and allows all users to share the same external phone lines. 

How it works ?

An IP PBX system consists of one or more SIP phones (inlcuding the WiFi phones), an IP PBX server and optionally a VOIP Gateway to connect to existing PSTN lines. The IP PBX server functions in a similar manner to a proxy server: SIP clients, being either soft phones or hardware-based phones, register with the IP PBX server, and when they wish to make a call they ask the IP PBX to establish the connection. The IP PBX has a directory of all phones/users and their corresponding SIP address and thus is able to connect an internal call or route an external call via either a VOIP gateway or a VOIP service provider.

The Top 10 benefits of IP PBX :

1. Much easier to install & configure than a proprietary phone system
2. Easier to manage because of web/GUI based configuration interface
3. Significant cost savings using VOIP providers
4. Eliminate phone wiring
5. Eliminate vendor lock in
6. Scalable
7. Better customer service & productivity
8. Twice the phone system features for half the price!
9. Allow hot desking & roaming
10. Better phone usability: SIP phones are easier to use

The IP PBX products --- IGS-2212W 

IGS-2212W Features :

All in One Design       
        - SIP Proxy Server (RFC 3261)
        - Analog Telephone FXO / FXS Interface
        - Internet Router WAN / LAN
        - Wireless A.P.
  Auto Attendant        
        - 10 unique auto attendants
  Voicemail
        - 100 minutes of storage capacity
  Calling Feature        
        - Call Transfer, Call Forward, Call Pickup, Call Park
        - DID
        - Configurable dialing plan
        - Caller ID
        - Dial by Number or Name
        - DND
        - Hunt groups
        - Speed dialing
        - Follow-me  

IGS-2212W Spec.   

Phone Interface
        - 2 FXO (PSTN) / 2 FXS (Extension)
        - 2 FXS (Extension)
        - Max 24 user extensions
        - Supports both Analog & SIP Extensions
  Audio
        - G.711 a-Law & u-Law, G.723.1, and G.729a
        - DTMF tone generation & detection
  Network Interface
        - One RJ-45 10/100 Base-T WAN ports
        - Three switched RJ-45 10/100 Base-T LAN ports
        - Wireless LAN 802.11 b/g
  Networking
        - WAN: DHCP client / Static / PPPoE IP Assignment
        - LAN: DHCP server with NAT Router Build-in
        - WMM & QoS supported
  Administration
        - Built-in web server for configuration
        - IVR commands setting by Extensions
        - Auto Provisioning
  VoIP Trunking
        - Supports PSTN Trunks
        - Support up to 8 SIP proxies upper registration
  Electrical Information
        - Power Supply: Output 12V DC/ Input 100-240 Volt AC Adapter
        - RoHS
        - FCC & CE compliant