Most PBX vendors would package SIP trunk and DID numbers together with their cloud PBX, and some customers may like this idea as they can deal with one vendor for all their telephone needs. However, we do NOT recommend this for a few reasons:

  1. You are not the actual owner of your numbers and are at the mercy of your PBX vendor if they will release the number to you when you decide to switch to an alternative telephone system.
  2. As you are not the actual owner of your numbers, you similarly do not have control over your SIP trunk and will not be able to have access to security mechanisms to protect it.
  3. Your PBX vendor will likely place a mark-up on all outbound local and IDD international calls, DID numbers, and SIP subscriptions.
  4. Your PBX vendor will probably not be able to provide you monthly billing with a detailed breakdown of call usage.
  5. Your PBX vendor is likely sharing their unlimited SIP trunk among their customers; it’s highly possible that an abusive user can bring down the SIP trunk, thus affecting all customers.

It is therefore highly recommended that you get your numbers directly from a SIP provider so that control is in YOUR hands.

Here are some of the screenshots from a Hoiio platform that may help you understand the advantage of using a professional SIP trunk service provider.

1. Have the option to do prepaid or post-paid on your SIP subscription as the choice between SIP providers and their range of subscription plans is fully yours. Go with whichever provider suits your requirements best.

2. Always have access to your user ID and password. Having full control over your SIP credentials allows you to provision it on any telephone system instead of being stuck with one vendor.

3. Be ensured of your own dedicated trunk, and have full control on how many concurrent calls and numbers you have depending on your unique requirements.

4. Secure your SIP trunk by restricting certain IP addresses from connecting with your SIP credentials.

5. Have full control over international outbound dialing by restricting access to unauthorized destinations.

6. Always know which devices are connected to your SIP trunk, and prevent unauthorized use.

7. The Internet rarely breaks down, but it’s always good to have a backup option. Being in control of your own SIP trunk means that you can simply configure call forwarding to an alternative number in the event of disruption to the Internet or your phone system.

8. Have access to a proper monthly phone bill with a detailed usage breakdown.

In essence, what you want to achieve is a phone system that provides maximum flexibility and control. Your phone line is essential to your business operations and it is important to ensure that this is protected at all costs.