IP-PBX and VoIP systems made it possible to simply extend the phone system over the internet, but security remains a major challenge. CooVox-U30 IP-PBX has been our hot selling model and many of our partners and resellers have been asking for best practice to allow the employees to use the office phone system from home or on the road when using CooVox-U30. (Click here to find out more about CooVox-U30)

In this article we propose two solutions and discuss pros and cons of either one.

Option 1: Using Sangoma SBC

Session Border Controllers (SBC) are security appliances to secure your phone system and let the remote users connect to your phone system. SBC Appliances are available in multiple capacity range from 5 to 4000 concurrent calls which suit any project sizing from SME to the enterprise and telco size. You may find more information about Sangoma SBC Products here: https://toshi.com.my/products/communication/sangoma/sbc

Besides the SBC you will need to have a public IP from your internet service provider. This is because we need to set a domain for remote users and let them access the phone system through the internet.

Figure 1: Remote users access to CooVox-U30 via SBC

Advantages:

• one time investment on SBC

Disadvantages: 

• Usually having Public IP is associated with additional cost on internet service
• Requires technical knowledge or need to have 3rd party support to install and maintain the SBC 

Option 2: Subscribe to out SIP Proxy Server Service

Our CooVox-U30 is a tiny yet powerful IP-PBX. With the latest firmware we have the support of our SIP Proxy service integrated with the PBX and ready to be enabled with few clicks.

What is SIP Proxy Server

“A proxy server that allows SIP-based telephony packets to traverse the network's firewall. The SIP proxy takes over call control and provides address translation in order to direct calls to the appropriate phones within the network. Deployed in companies with many SIP phones, a SIP proxy offers a very comprehensive solution for enterprises. For example, it supports authentication, encryption, telecommuters and can even serve as backup for the PBX.”

In simple words, SIP proxy server works as a middleman to connect the remote users to the core IP-PBX without compromising the security of your network. Infact using SIP proxy server is a proven method to enhance the VoIP system security and allows easy remote working.

Figure 2: Remote users access to CooVox-U30 via SIP Proxy Server

What we offer

Customers using CooVox-U30 would be able to subscribe to our SIP Proxy Service. The service allows any number of extensions to be used remotely using any desktop IP-Phone or smartphone apps.

The service offered with an affordable annual fee; it also eliminated the need of having public IP.

Advantages: 

• Highly affordable service
• No technical knowledge required to activate the service
• Does no require public IP

Disadvantage:

• Recurring annual fee 

Conclusion

Having SBC for small business is costlier than SIP Proxy service. SIP Proxy service has shown better results and is less complicated which makes it the perfect choice for the SME market.

Want to know further about the solution? Contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. or call (+6) 03-27879191 for consultation. React now before other does.