SipOne - An integrated IP Telephony Solution

Network Overview 


Sip One diagram

The image above details the elements in the SipOne solution operating over a satellite or other terrestrial networks.

The SipOne solution satisfies three key requirements for corporate users:

  • SipOne is a virtual PBX system: SipOne is a cloud based PABX system that provides full in-office PABX functionality with minimum on-site equipment. No need for expensive hardware or PBX replacement programs.

  • SipOne is a soft switch and call routing platform: SipOne users can make low-cost local, regional and international calls with typical international calling rates between 10 – 40% of Telco rates.

  • SipOne is a unified communication solution: SipOne includes unified communication features between user smartphones, tablets, laptops and desktop phone

User Advantage  

Free “on-net” calling

Users can call between extensions within the office, inter-branch national or international without any Telco charges. All that is required to use the SipOne platform via a reliable connection to the Internet.

Lower Cost Calling

Users can leverage the SipOne bulk interconnect services for reduces calling rates to national and internationaldestinations.

Zero CAPEX, minimal OPEX

SipOne solutions are implemented on customer premises using leading AudioCodes gateways and SBC’s. The hardware is scalable and allows for future ready growth path options and a “pay-as-you-go” cost structures.

ABX Replacement

SIpOne includes a full set of soft PABX features and function that completely eliminate the need to replace hardware PABX systems.

This is a very elegant solution with lower capex and opex costs.

Quick deployment

The end-to-end SipOne voice service solution is immediately available whenever and wherever a reliable Internet connection is available. This completely eliminates the need to wait for Telco installations or service change order requests.

Integration with existing Telco service

SipOne as a carrier class switch is designed in association with AudioCodes and other VoIP hardware vendors to ensure ease of integration into existing Telco networks. PSTN services such as analogue lines, ISDN, BRI and PRI / E1 services integrate seamlessly and enable least cost routing ultimately saving huge amounts on call charges.

SipOne and Satellite

The SipOne platform includes the AudioCodes technology that are optimised for high quality calls even over satellite links. Satellite links enable “anywhere, anytime” service options with rapid deployment


Basic Description  

The SipOne Virtual PBX server, Billing platform and Carrier Class Switch is located in the Teraco Data Centre in Isando South Africa, where it connects to all the international traffic.  VoIP traffic originating from IP Phone’s, Session Border Controllers or soft clients at any remote location that is connected to the Internet is routed via the core SBC to SipOne.

Platform Characteristics  

Virtual PBX

SipOne provides inter-branch and in-office connectivity that enables free “On-Net” calls with standard PBX features such as Follow me / Find me, Hunt Groups, Parking, Transfers, hold, voicemail as well as Auto attendants.

International Voice Breakout

Customers connected to SipOne can call any International destination at greatly reduces priced compared to standard PSTN charges.

Recommended peripheral VoIP Hardware  

In order to realize a secure, high quality and reliable IP telephony network, the following on – site hardware is recommended:

Session Border Controller (SBC)

SBC’s can be seen as a VoIP “Firewall and Router”.  It is highly recommended that for office locations with an excess of 5 users an AudioCodes SBC is installed.

VoIP Gateway

Gateways convert traditional PSTN interfaces such as FXO, FXS, BRI, and PRI to SIP.  AudioCodes gateways are available with various combinations of Legacy Interfaces.  Hybrid SBC – Gateway combinations are also available for Brownfield implementations.

IP Phone

AudioCodes IP Phones delivers HD quality voice with compliant with bandwidth efficient protocols such as OPUS and SILK.