Close Menu
TechCentralTechCentral

    Subscribe to the newsletter

    Get the best South African technology news and analysis delivered to your e-mail inbox every morning.

    Facebook X (Twitter) YouTube LinkedIn
    WhatsApp Facebook X (Twitter) LinkedIn YouTube
    TechCentralTechCentral
    • News
      Home affairs pulls the plug on the green ID book - Leon Schreiber

      Home affairs pulls the plug on the green ID book

      1 October 2026
      South Africa's digital ID is here - but you can't have it yet - Leon Schreiber

      South Africa’s digital ID is here – but you can’t have it yet

      1 October 2026
      Lexi Novitske, general partner at Norrsken22, on the TechCentral Show

      TCS | Norrsken22’s Lexi Novitske on how China is winning African tech

      1 October 2026
      Eskom waives rooftop solar fees, but the registration fight isn't over

      Eskom waives rooftop solar fees, but the registration fight isn’t over

      1 October 2026
      Absa is moving cash out of its branches

      Absa is moving cash out of its branches

      1 October 2026
    • World
      BMW restructuring plan bets on AI and new models

      BMW restructuring plan bets on AI and new models

      1 October 2026
      OpenAI's rogue agent problem keeps getting bigger - Sam Altman

      OpenAI’s rogue agent problem keeps getting bigger

      28 September 2026
      The new battle over the desktop

      The new battle over the desktop

      23 September 2026
      AMD is now worth a trillion dollars - Lisa Su

      AMD is now worth a trillion dollars

      22 September 2026
      Anthropic weighs new model launch to blunt OpenAI's Astra surge - Anthropic CEO Dario Amodei and OpenAI CEO Sam Altman

      Anthropic weighs new model launch to blunt OpenAI’s Astra surge

      21 September 2026
    • In-depth

      10 days that changed the course of AI

      21 September 2026
      Meta to the AI industry: slow down without us - Mark Zuckerberg

      Meta to the AI industry: slow down without us

      16 September 2026
      Google DeepMind CEO Demis Hassabis. Image: John Sears

      The plan to stop AI from breaking the world

      16 July 2026
      The internet has a Strait of Hormuz problem

      The internet has a Strait of Hormuz problem

      15 July 2026
      AI boom sparks rally, frenzy and fear

      AI boom sparks rally, frenzy and fear

      11 June 2026
    • TCS
      TCS | Dominic White and Adam Ely on AI agents going rogue

      TCS | Dominic White and Adam Ely on AI agents going rogue

      29 September 2026
      TCS | Octotel's Trevor van Zyl on the fibre merger question

      TCS | Octotel’s Trevor van Zyl on the MetroFibre merger question

      16 September 2026
      Meet the CIO | Shoprite's Chris Shortt on what a supermarket becomes

      Meet the CIO | Shoprite’s Chris Shortt on what a supermarket becomes

      9 September 2026
      Rubicon's EV charging network is profitable - and growing fast - Watts & Wheels

      W&W | Rubicon’s EV charging network is profitable – and growing fast

      8 September 2026
      Winstone Jordaan on building a national EV charging network

      Winstone Jordaan on building a national EV charging network

      2 September 2026
    • Opinion
      South Africa's next energy crisis is in the accounts department - Craig Holmes

      South Africa’s next energy crisis is in the accounts department

      29 September 2026
      The steam engine lesson AI doomsayers keep missing - Sam Clarke

      The steam engine lesson AI doomsayers keep missing

      28 September 2026
      Regulating AI: apply the laws we have first - Dirk de Vos

      Regulating AI: apply the laws we have first

      21 September 2026
      What Revolut can and cannot take from South Africa's banks - Pambos Soteriades

      What Revolut can and cannot take from South Africa’s banks

      15 September 2026
      The end is nigh, and the shares go on sale in October - Duncan McLeod

      The end is nigh, and the shares go on sale in October

      14 September 2026
    • Company Hubs
      • 1Stream
      • Africa Data Centres
      • AfriGIS
      • Altron Digital Business
      • Altron Document Solutions
      • Altron Group
      • Arctic Wolf
      • Ascent Technology
      • AvertITD
      • BBD
      • Braintree
      • CallMiner
      • CambriLearn
      • CM.com
      • Contactable
      • CYBER1 Solutions
      • Digicloud Africa
      • Digimune
      • Domains.co.za
      • ESET
      • Euphoria Telecom
      • HOSTAFRICA
      • Incredible Business
      • iONLINE
      • IQbusiness
      • Iris Network Systems
      • Kaspersky
      • LSD Open
      • Mitel
      • NEC XON
      • Netstar
      • Network Platforms
      • Next DLP
      • Ovations
      • Paracon
      • Paratus
      • Publishared
      • Q-KON
      • SevenC
      • SkyWire
      • Solid8 Technologies
      • Telit Cinterion
      • Telviva
      • Tenable
      • Vertiv
      • Videri Digital
      • Vodacom Business
      • Vox
      • Wipro
      • Workday
      • XLink
    • Sections
      • AI and machine learning
      • Banking
      • Broadcasting and Media
      • Cloud services
      • Contact centres and CX
      • Cryptocurrencies
      • Education and skills
      • Electronics and hardware
      • Energy and sustainability
      • Enterprise software
      • Financial services
      • HealthTech
      • Information security
      • Internet and connectivity
      • Internet of Things
      • Investment
      • IT services
      • Lifestyle
      • Policy and regulation
      • Public sector
      • Retail and e-commerce
      • Satellite communications
      • Science
      • SMEs and start-ups
      • Social media
      • Talent and leadership
      • Telecoms
      • Watts & Wheels
    • Events
    • Advertise
    TechCentralTechCentral
    Home » Company News » Why VoIP beats GSM for voice calling

    Why VoIP beats GSM for voice calling

    By Vox13 August 2019
    Twitter LinkedIn Facebook WhatsApp Email Telegram Copy Link
    Get breaking news on WhatsApp

    Global System for Mobile (GSM) was not only the first mobile telecommunications system in the world, but also the most popular. GSM is like the old man that was once the popular jock at high school. His looks have faded, the knees have given in a bit, and the six pack has turned into a serious dad bod — but his kids still think he is cool. But they’re teenagers now, so…

    The reality is GSM is fast becoming outdated with the rise of a younger, fitter, more visionary voice-over-Internet protocol (VoIP) technology.

    Why VoIP is becoming more relevant than GSM

    Compatibility with modern technology
    While GSM is the OG (Original Gangsta) of mobile telecommunications and is still used today, it simply is not as compatible with modern technology as VoIP. More and more businesses are moving their technologies to the cloud. Having a GSM account as opposed to a VoIP account will limit your business capabilities.

    Hardware needed
    VoIP requires less hardware as new telephony integrates seamlessly with VoIP providers. VoIP can connect directly to your PBX, whereas the old-school GSM will need additional hardware to do the same thing. Less hardware means less costs.

    Number porting
    With VoIP, you can keep your fixed-line number (011, 010, 021) when porting. You can’t port a fixed-line number to a mobile GSM service. Imagine the headache and cost of new business contact details.

    Connectivity
    GSM will only work when there is mobile network coverage in the area, whereas VoIP does not rely on mobile coverage. Instead, it works with any Internet connection or with a dedicated line to a VoIP provider — there is no need for Internet at all in this case.

    Call rates
    Since VoIP call rates are governed by communications regulator Icasa’s interconnect call termination rates, they can be substantially reduced in comparison to GSM call rates. GSM call rates are governed by the fees charged from a variety of mobile network providers it has to connect with in order to make your call. Seriously, who wants to pay a higher phone bill?

    Quality
    The quality of a VoIP call exceeds that of a GSM call. This is based on the Mean Opinion Score (MOS — measures subjective call quality) for VoIP calls, which is 3.5 – 4.2 out of 5. GSM calls are scored 2.9 to 4.1 out of 5.

    Scalability
    An entire enterprise can have all their inbound and outbound calls routed from a single SIP trunk. One GSM Sim card can only support one call. VoIP allows you to utilise less equipment and produce a higher level of productivity.

    Vox Voice Calling App – VOBI
    VOBI is Vox’s voice calling application. It gives you a SIP account on your mobile phone, allowing you to call to, and from, anywhere in the world at reduced call rates. There is no need for roaming as VOBI runs over any Internet connection — not just mobile data. VOBI can connect to your company’s cloud-hosted PBX when the power goes out, when you travel for work or when you work from home, allowing calls to be accessed remotely and business to continue as usual.

    Visit the Vox website to find out how you can level up your life and your business today with Vox’s VoIP application, VOBI.

    • This promoted content was paid for by the party concerned
    Add TechCentral as a preferred source on GoogleFollow TechCentral on Google NewsGet breaking news on WhatsApp


    VOBI Vox Vox VOBI
    WhatsApp YouTube
    Share. Facebook Twitter LinkedIn WhatsApp Telegram Email Copy Link
    Previous ArticleLanDynamix helps secure Michael Mount campus
    Next Article Questions to ask when buying social media technology

    Related Posts

    Why SA homes need better Wi-Fi, not faster internet - Vox Telecom

    Why SA homes need better Wi-Fi, not faster internet

    8 September 2026
    We changed offices. Our internet didn't get the memo - Vox ISP

    We changed offices. Our internet didn’t get the memo

    26 August 2026
    Frogfoot to expand township fibre roll-out after major fundraising - Abraham van der Merwe and Shane Chorley - Abraham van der Merwe and Shane Chorley - Abraham van der Merwe and Shane Chorley

    Frogfoot to expand township fibre roll-out after major fundraising round

    24 August 2026
    Company News
    Cloud and AI won't deliver value on their own, executives warn

    Cloud and AI won’t deliver value on their own, executives warn

    1 October 2026
    Dell Technologies Forum 2026: what to expect in Johannesburg

    Dell Technologies Forum 2026: what to expect in Johannesburg

    1 October 2026
    What Smollan learnt moving 9 000 users to Google Workspace - Digicloud Africa

    What Smollan learnt moving 9 000 users to Google Workspace

    1 October 2026
    Opinion
    South Africa's next energy crisis is in the accounts department - Craig Holmes

    South Africa’s next energy crisis is in the accounts department

    29 September 2026
    The steam engine lesson AI doomsayers keep missing - Sam Clarke

    The steam engine lesson AI doomsayers keep missing

    28 September 2026
    Regulating AI: apply the laws we have first - Dirk de Vos

    Regulating AI: apply the laws we have first

    21 September 2026

    Subscribe to Updates

    Get the best South African technology news and analysis delivered to your e-mail inbox every morning.

    Latest Posts
    Home affairs pulls the plug on the green ID book - Leon Schreiber

    Home affairs pulls the plug on the green ID book

    1 October 2026
    South Africa's digital ID is here - but you can't have it yet - Leon Schreiber

    South Africa’s digital ID is here – but you can’t have it yet

    1 October 2026
    Lexi Novitske, general partner at Norrsken22, on the TechCentral Show

    TCS | Norrsken22’s Lexi Novitske on how China is winning African tech

    1 October 2026
    Eskom waives rooftop solar fees, but the registration fight isn't over

    Eskom waives rooftop solar fees, but the registration fight isn’t over

    1 October 2026
    © 2009 - 2026 NewsCentral Media
    Built and maintained by Chronon
    • Cookie policy (ZA)
    • TechCentral – privacy and Popia

    Type above and press Enter to search. Press Esc to cancel.

    Manage consent

    TechCentral uses cookies to enhance its offerings. Consenting to these technologies allows us to serve you better. Not consenting or withdrawing consent may adversely affect certain features and functions of the website.

    Functional Always active
    The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
    Preferences
    The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
    Statistics
    The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
    Marketing
    The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
    • Manage options
    • Manage services
    • Manage {vendor_count} vendors
    • Read more about these purposes
    View preferences
    • {title}
    • {title}
    • {title}
    🇿🇦 Sign up to the TechCentral newsletter