Voice over IP SIP Trunk

Maybe you’ve heard of SIP Trunk or VoIP SIP Trunking. Maybe an acquaintance of yours saves money by using a Liquid Sky SIP trunk in his or her business. As a result, you’d like to know more. VoIP stands for Voice over Internet Protocol, or in more common terms telephone service over the Internet.

Because your business is already paying for the internet, you can now use our VoIP solution to make calls at a reduced cost.

A SIP trunk is the VoIP equivalent of the traditional analogue, basic or primary rate telephony service. It’s a multi-line service that you would use together with a Switch Telecom Hosted Switchboard or a VoIP PBX. You can also connect it to a traditional switchboard with a gateway device.

You can choose from a minimum of 4 up to 1000 channels. A channel is the amount of concurrent lines you can have linked to a number or numbers to allow for concurrent calls both incoming and outgoing. This means that the trunk is ideal for both small and large companies, even call centers.

Get a SIP Service

Save up to 50% on your business call charges

Through industry surveys and our own customers experiences, we have seen up to 50% call cost reduction for our customers.

Free fax to email solution for multiple users

If your company still uses fax services, we can provide you with one for free.

No lengthy contract – sign up month to month.

With no contracts there is no worries, port over to Liquid Sky.

Easily upgradable with no impact on your business

Need more channels? Not a problem upgrading is easy.

Do You Have Questions?

A list of frequently asked questions to help you understand how it works.

1. What numbers can we get from Liquid Sky?

Liquid Sky through Switch Telecom can offer you a new number with your Service or can port your existing number.

We offers numbers in the following ranges:

Non-geographic number ranges:

  • 087 550 xxxx – National
  • 087 551 xxxx –  National
  • 086 0xx xxxx – Inbound National
  • 086 1xx xxxx –  Inbound National
  • 080 0xx xxxx – Toll-Free

Geographic numbers ranges:

  • 010 500 xxxx – Johannesburg
  • 011 568 xxxx – Johannesburg
  • 012 004 xxxx – Pretoria
  • 013 004 xxxx – Nelspruit / Witbank / Middelburg
  • 014 004 xxxx – Rustenburg / Nylstroom
  • 015 004 xxxx – Polokwane / Potgietersrus / Louis Trichardt
  • 016 004 xxxx – Vereeniging / Meyerton
  • 017 004 0xxx – Ermelo/ Amersfoort/ Bethal/ Surrounds
  • 018 004 0xxx – Klerksdorp / Sannieshof / Surrounds
  • 021 300 xxxx – Cape Town
  • 022 004 0xxx – Malmesbury
  • 022 125 0xxx – Malmesbury / Moorreesburg / Surrounds
  • 023 004 xxxx – Worcester / Beaufort West
  • 027 004 0xxx – Namaqualand / Vredendal / Springbok
  • 028 004 0xxx – Swellendam / Caledon / Hermanus
  • 028 125 0xxx – Bredasdorp / Hermanus / Surrounds
  • 031 100 xxxx – Durban
  • 032 004 0xxx – Stanger / Tongaat / Ballito / Surrounds
  • 033 004 xxxx – Pietermaritzburg
  • 034 004 0xxx – Vryheid / Newcastle
  • 035 004 0xxx – Empangeni/ Eshowe / Surrounds
  • 036 004 0xxx – Drakensberg / Ladysmith
  • 039 004 0xxx – Hibberdene / Kokstad / Surrounds
  • 040 004 0xxx – Bhisho
  • 041 004 xxxx – Port Elizabeth
  • 042 004 xxxx – Uitenhage / Somerset East
  • 043 004 xxxx – East London
  • 044 004 xxxx – George
  • 045 004 0xxx – Queenstown
  • 046 004 0xxx – Grahamstown / Port Alfred
  • 047 004 0xxx – Mthatha
  • 048 004 0xxx – Steynsburg
  • 049 004 0xxx – Graaff-Reinet
  • 049 125 0xxx –  Graaff-Reinet / Middelburg / Surrounds
  • 051 004 xxxx – Bloemfontein
  • 053 004 xxxx – Kimberley
  • 054 004 0xxx – Gordonia / Upington
  • 056 004 0xxx – Kroonstad
  • 057 004 0xxx – Welkom / Theunissen / Surrounds
  • 058 004 0xxx – Bethlehem

2. Can I keep my existing number?

Mobile Number Portability has been available between the mobile networks for a few years already and Geographic Number Portability is also available between selected Fixed Line networks. Liquid Sky has the ability to offer this through our Channel carriers. Non-Geographical numbers are not portable at this time, these are:

Non-geographic number ranges:

  • 087 550 xxxx – National
  • 087 551 xxxx –  National
  • 086 0xx xxxx – Inbound National
  • 086 1xx xxxx –  Inbound National
  • 080 0xx xxxx – Toll-Free

3. Does Liquid Sky offer connectivity?

We offer a range of connectivity solutions to suite most business requirements, get in touch with us to see how we can assist you.

4. Do you need to use our PBX or hardware infrastructure?

No, but we would recommend contacting us to discuss which equipment works best.

5. What protocols are supported through Liquid Sky?

We only support SIP (Session Initiation Protocol) at this time.

6. What payment methods are available?

Liquid Sky offers both Pre-Paid (Advance) and Post-Paid (Arrears) payment options through our Carrier Partners.

On Post-Paid billing the invoice is automatically generated and emailed on the 1st of each month in respect of that month’s service fee and the previous month’s calls.
Payment is collected strictly via debit order three working days later.

Subscribers who have elected to pay in advance will need to pay via EFT or by Credit Card on a strictly pre-paid basis. Airtime top-ups purchased using a Credit Card on the Customer Client Zone are immediate whereas EFT payments are subject to bank clearance delays.

We also offer a post paid service, in this method we will invoice you on the 1st of each month for last months usage, talk to us about this by clicking here

7. What do others pay to call me?

These call charges are largely controlled by the service provider that people who phone you are using. Under normal circumstances they should be similair to standard calling rates.

8. How many direct dial numbers can I have with my SIP trunk solution?

You can take as many direct dial numbers as you require.  We do however work on a 10 number to 1 channel ratio. For example, if you have a 4 channel trunk, you can have a maximum of 40 direct dial numbers.  If you require more than 40 numbers the channels on your trunk will have to increase accordingly.

Interested in SIP Services?

Contact us and get some more information on how this works and what the costs are.
Contact us