SIP Trunking

SIP trunking provides access to and from the Public Switched Telephone Network (PSTN) over the Internet Protocol (IP). Unlike in traditional telephony, where physical wires were once delivered from the telecoms company to a business, a SIP trunk operates over an existing broadband or leased line allowing a company to replace their traditional fixed PSTN lines with PSTN connectivity via a SIP trunking service provider, such as O-Tel Telecom.

How it works SIP Trunks are linked to a customer’s current telephone system which is either an IP enabled PBX or by using a Media VoIP Gateway, typically, a more traditional PBX. Outgoing calls are then routed through the PBX and out via the SIP Trunk instead of using costly traditional phone lines.

The Benefits

SIP trunks offer significant cost-savings eliminating the need for costly analogue, ISDN BRIs (Basic Rate Interfaces) or PRIs (Primary Rate Interfaces). SIP trunks offer the flexibility of being able to route multiple calls from your existing local numbers, anywhere in the world, to any national or international number within your company at the same cost. So a call to a Cape Town number may be answered in London or NewYork. SIP trunks allow home workers to be connected to the main office using the internet allowing transparent customer communication. SIP trunks can connect intraoffice PBXs eliminating the cost of intra office calls and offering the flexibility of overflowing calls to other offices at peak times or out of hours. Billing and Costing

* Integrated pre/postpaid real-time billing and costing engine with call cut off* Unlimited customizable charge plans for your clients (wholesale model).* Blocked, flat rate, single rate and multi-tier rating (vary rate based on call duration)* Costing by ANI, NPA, NPA+NXX, DNIS, time of day, day of week, date/time range and/or destination* Ability to vary the scale of a minute at different intervals of a call.

Real-Time Control and Monitoring

Today’s competitive climate demands that businesses conduct their operations in real-time especially when it concerns network security, credit validation, rating and billing. O-Tel Telecoms Trunking solution helps to make your business more efficient and successful by performing its core functions in real-time resulting in improved cash flow and reduced collections, fraud and administrative overhead. Airtime replenishment can be done 24/7/365 securely via EFT. The world class automated system will ensure your service is one step ahead of the competition.

Up and running in minutes!We are a licensed carrier-grade wholesale VoIP provider offering high-quality SIP trunking and DIDs (phone numbers) at the most competitive rates. Our service is very flexible and scales down from the VoIP hobbyist, up to the largest call centers. When you sign up for account with us, you receive immediate access to the best management panel on the market to get your calls live within minutes. You will have the ability to purchase DiDs (numbers), manage trunks, view call records in real time, review statistics, and more.

• Ensure your password for your O-Tel SIP Trunk account is very secure.
• Restrict web access to your PBX/VoIP system.
• Protect your PBX/VoIP system with software-based firewalls such as IPTables.
• Protect your network with a hardware-based firewall.
• Use strong passwords for all phone extensions on your PBX.
• Use non-standard ports for system services.
• Implement a VPN for your PBX/VoIP system or join the O-Tel National MPLS ADSL Network.
• Review access logs on a regular basis.
• Keep up to date on security patches and practices for your network services.

VoIP fraud patterns are constantly evolving today and we are doing our part to develop increasingly sophisticated detection and prevention measures. The best line of defense is always the security of your own systems.