10 Best Wholesale VoIP Softswitch for Call Center Business In 2022 | Vpsvos

July 26, 2021by Russell0

There is no doubt that VoIP technology is growing more than ever.

Therefore, more and more developers and manufacturers are focusing on VoIP technology. But Voice Over Internet Protocol (VoIP) isn’t possible without a VoIP Softswitch. This is a popular telecommunication software that connects phone calls over a reliable network or internet service.

If you are willing to do VoIP wholesale or retail business, you need to find robust and scalable ones. In this article, we will help you find the best wholesale VoIP Softswitch. — Some of these are specially made for endeavors that can supply wholesale business to their customers. So, go nowhere, stay with us till the end of this article.

Best wholesale VoIP Softswitch list:

We have included some of the best VoIP soft switches in our list. There are the 10 best VoIP switches on our list. We can guarantee many of these switches are familiar to you if you have experience with VoIP.

1. MediaCore

Notable Features –

  • Affordable Class 4 Softswitch for enabling secure VoIP call termination
  • Guarantees efficient and smooth transmission over voice packets
  • The Session Border Controller protects business data and assures network stability
  • Supports more than 1500 calls per minute
  • Almost 30000 calls can be generated simultaneously
  • Monitor SMS and VoIP traffic via charts, diagrams, stats, and more
  • Billing function offers payment calendar, CDR, VAT accounting, loop detection
  • Offers API integration for ERP, CRM, CMS, BSS softwares
  • ACD, PDD, ASR, NER based statistics and integration
  • LCR, LNP, Jurisdictional, and various types of routing


Positives Negatives
  • Brings affordable solutions
  • Supports more calls per minute
  • Numerous features in the billing process
  • Access various types of routing
  • API integration is available
  • It’s not a class 5 Softswitch, so choose wisely
  • Can’t connect suppliers to end-users

MediaCore Softswitch is an all-in-one class 4 solution for managing VoIP termination, peering, traffic aggregation, wholesale messaging, and everything on the telecom wholesale network. The benefits of using MediaCore Softswitch are more than enough.

For easy traffic management, MediaCore SBC helps carriers by providing a user-friendly interface.— Moreover, its advanced reports help executives and managers monitor the business flow. And they are very serious about customer support. That’s why their support team is 24/7 standby to assist you.

In terms of transcoding, MediaCore softswitch supports GSM FR, g723(5.3,6.3), g729(a,b,ab), and g711(u-law,a-law) codecs. 323 v.6 (H.245 v.13, H.225 v.6), SIP v.2.0 (RFC 3261, RFC 4566), SMPP v3.4 protocol for SMS, and 38 Fax Relay Protocols are enabled for transcoding.

2. iTel Switch

Notable Features –

  • Flexible rate plan management (TAX activation, F&F rate, prefix-based multiple rate plans, etc)
  • Multilevel reseller option with a robust client portal
  • Summary reports with ACD/ASR quality monitoring for assisting service providers
  • Allows detailed SIP log, live calls log, and total calls monitoring
  • Several advanced routing like LLR, LCR, QoS, etc for flexibility
  • 2-factor authentication is enabled with OTP integration
  • Enables multi-layer security with IP restriction
  • Trace facility for admin for billing activities
  • Present monitoring graphs for live calls


Positives Negatives
  • Extra security with 2-factor authentication
  • Monitoring graphs and summary reports
  • User-friendly admin panel dashboard
  • Best for wholesale and retail VoIP traffic
  • Enables multi-layer security
  • Alerts based on SMS and email
  • Integration with additional modules
  • Multiple features for DID management
  • Can face latency and jitter issues
  • API is not available for many things
  • The yearly support fee is high
  • Support ticket replies take a long time

iTel Switch thinks about your revenue and way of ensuring competitive advantages. It probably offers the most security in the VoIP caller industry. You will get top-notch security features like – IP restriction, auto-blocking failed attempts, tracing billing activities, and more.

— Aside from these, 2-factor authentication with OTP integration adds extra layers of security for the admin and reseller. For ensuring uninterrupted services and reducing business risks, iTel Softswitch sends behavioral SMS and email-based alerts

3. MVTS – MERA VoIP Transit Softswitch

Notable Features –

  • NOC TT, auto-lock routes, automatic notifications for revenue assurance
  • Integrated transcoding for solving next-generation network issues
  • Pre/post billing methods are integrated with automated invoicing
  • Cost routing is of 3 types – Least Cost/QoS/Real-time
  • It ensures absolute protection for your revenue
  • It has high CPS (Calls Per Second) capability
  • Automated invoice for user satisfaction


Positives Negatives
  • Two types of architecture are available
  • Service for dynamic and static endpoint
  • The integrated billing system is effective
  • H.323 or SIP translation available
  • Call details can be saved as a record 
  • Requires the latest version of OS
  • Requires knowledge of the right architecture

MERA VoIP Transit Softswitch (MVTS) is an advanced switching platform. It is highly capable of handling traffic and distributing geographical architecture. The newer version of this Softswitch is the MVTS II for the next generation VoIP calling.

—The MVTS II version can manage large-scale VoIP traffic networks. And it has a vision for running 3+ million minutes of VoIP calls every month. This was specially designed for having a higher capability for traffic handling. MVTS is reliable for both customers and vendors.

It has three types of routing – Least Cost routing, Real-time routing, and Quality based (QoS) routing. Aside from these, its SIP (Session Initiation Protocol) supports H.323 and excellent codec conversion.

4. Sippy Softswitch

Notable Features –

  • Sippy is self-contained by the Class 4 and Class 5 features and functionalities
  • Softswitch and components are supplied through FreeBSD
  • Parts like Asterisk, OpenSIPS are integrated into Sippy
  • It is an open-source software contributor
  • Featured and secure operation system


Positives Negatives
  • Offers both class 4 and class 5 Softswitch
  • Various plans for pricing
  • Works with regulatory modules
  • Excellent DID inventory management 
  • XML and RPC API available
  • Support level varies depending on the region
  • Voice quality is generally low

You can make calls and review the call detail records through Sippy Softswitch. They have come up with a lot of VoIP and telecommunication expertise. At the same time, it has gained a lot of reputation in this sector.

For instance, Sippy is the original developer of the SIP B2BUA and inventor of the RTP Proxy.— On top of that, they have enough technical skills in VoIP and SIP. For providing convenient networks to the clients, they have scalable and modular core products.

Sippy Softswitch loves contributing to the growth of open source softwares. That’s why Asterisk and OpenSIPS are some of the integral parts of Sippy.

5. VOS3000 Softswitch

Notable Features –

  • Detailed reports on revenue, account, gateway, etc
  • SHA512 and RSA2048 encryption is used for login
  • AES128 encryption is used for storage
  • An asynchronous and advanced message bus will be used
  • Pre/postpaid billing along with real-time billing is supported
  • Bill precision 0.0000001 is supported
  • Check status, online gateway, current call, routing gateway in real-time
  • Compatible with various coding i.e. H.261, VP8, T38, SIP INFO, etc


Positives Negatives
  • Support up to 5000 concurrent calls
  • Support 20,000 online SIP accounts  
  • Track multiple cases from the dashboard
  • Business won’t be hampered by broken gateways
  • Full admin control with add and delete 
  • Auto billing report and invoicing
  • Flexible rent options
  • Installation charge is separate
  • Web Dashboard admin panel not accessible, need to install .exe file for Windows

If you are looking for powerful and secure voice-over IP switches, the VOS3000 Softswitch is the ultimate option. It is being used for managing accounts. Rate, package, card, gateways, phone, Softswitch, user, web self-service, and data query.

— The VOS3000 has gone through rigorous testing for proving its importance in small to medium carrier-class operations. Therefore, it can support up to 5000 calls simultaneously. On top of that, it can receive 1200 calls per second, which is more than enough.

VOS3000 Softswitch can integrate with add-ons and modules like Call Back Business System or Calling Card to offer customers a stable and reliable operating system. Aside from that, it supports SIP, SIP-H323, and H323 technologies.

VOS3000 Softswitch

6. Voipswitch

Notable Features –

  • Multitenant IP PBX allows hosting many enterprises from one platform
  • Browser to browser video or audio call with web RTC based portal
  • WebRTC integrated self-care portal is available for the users
  • Unified communication is strengthened with mobile UC clients
  • This Softswitch is featured with class 5 functionalities
  • Rich communication suite for convenient billing


Positives Negatives
  • Multiple enterprises can be hosted
  • WebRTC integration for users
  • Good for call center services
  • Functionalities for flexible billing
  • Excellent for mobile UC clients 
  • Offers only class 5 Softswitch
  • Poor voice quality 

For the service provider, Voipswitch can be their complete white-level VoIP solution. This wholesale VoIP Softswitch is created for agent structures and multi-level resellers. Clients and vendors will fall in love with the features of Voipswitch.

Voipswitch declares –
They will make tomorrow’s communication happen today

— Yep, it’s quite true. Because the company’s key differentiator is the VoipSwitch platform. In fact, the company is reputed for implementing over 15000 VoipSwitch systems all over the world. This UK-based company compromises nothing for delivering scalable Softswitch and module features that are proprietarily integrated.

7. FreeSwitch

Notable Features –

  • Unlocks the potential of telecommunication from a Raspberry PI to a multi-core server
  • Can work in collaboration with SIP, LDAP, Zeroconf, jingle, SCCP, H.323, etc
  • Perfect for PBX systems, video conferencing, and IVR services
  • Speech phrase interface is available for multi-lingual platforms
  • Supports WebRTC in the newer version of FreeSwitch
  • Can run on Windows, Linux, Mac OS X, ARM, *BSD
  • Access to various modules to extend functionalities
  • Basic IP or PBX features are available


Positives Negatives
  • Can collaborate with SIP, jingle, H.323, etc
  • Can run on multiple operating systems
  • Extendable functions with various modules
  • Comprehensive guide for support
  • PBX and IP features add an extra advantage 
  • A reliable internet connection is a must
  • Call locations can’t be tracked

FreeSwitch is an open-source PBX telephony application. FreeSwitch can collaborate with Yate, Asterisk, Bayonne, OpenPBX to build softphones. Alongside this, FreeSwitch can be used for VoIP switching by combining H.323, LDAP, XMPP, Zeroconf, SIP (Nokia Sofia Library), and other technologies.

FreeSwitch has a modular and extensible architecture. — Although the application is written in C code, it can take advantage of many software libraries. Supported protocols are – Skinny Call Control Protocol (SCCP), Google Talk (dingaling), SIP (Sofia SIP), h.323 (OPAL), and Skype (Skypopen).

8. Asterisk

Notable Features –

  • Good for installing and configuring VoIP, SMS, dongle, etc
  • Can also configure and install FreePBX
  • You can configure SIP trunking and channelized SIP trunking
  • Good for shell scripting and disaster recovery
  • Allows modifying Asterisk dial plan and planning infrastructure
  • Full administration for monitoring hosting systems


Positives Negatives
  • Modified planning structure is convenient
  • Necessary extensions can be setup
  • PBX consultant for FreePBX
  • Custom tracking and NxN IVR surveys
  • Build powerful yet a low-cost turnkey system
  • Full-color displays for IP calling
  • No call recording in the Classic plan
  • No voice mails in the Classic plan

Asterisk is one of the best wholesale VoIP soft switches for handling many concurrent calls. This is an absolute framework for developing multi-protocol and real-time applications. Asterisk Softswitch flushes the complexities of telecommunications so that users can enjoy smooth voice-over calls.

It is an open-source framework that is capable of turning a simple PC into a communication server. This open-source framework is used by call centers, government agencies, and small to large business companies. —  Many PBX systems, conference servers, and VoIP ports rely on Asterisk

9. Goautodial

Notable Features –

  • Updates use WebRTC, Asterisk, Kamailio, JSSIP, CreamyCRM, OSticket, and more
  • Get on-demand or full call recordings and save them on your FTP server
  • Good for Customer Relationship Manager (CRM) type applications
  • Recycling and leads filtering is applicable for lead management
  • It is responsive and supports major web browsers
  • Compatible for multilingual platforms
  • The system is based on modular plugins
  • Build with Asterisk, HTML5, JSSIP, PHP7, Bootstrap3, and more


Positives Negatives
  • Good for IVR, ACD, CRM, tracking system
  • Excellent portability and scalability
  • Use of previous GOautodial applications
  • 3-ways of transferring calls
  • 3-ways of conferencing
  • Auto and manual callback schedules
  • Compliance in the US, UK, and Australia
  • Real-time dashboard with analytics
  • Sometimes calls cannot be recorded properly
  • Sometimes dropped calls don’t show

Goautodial is all about creating omnichannel contact center suites. It combines the previous GOautodial applications (GOagent, GOadmin, and GOreports) and integrates them appropriately for creating intuitive web apps. You can easily use the “GOautodial app” for managing multi or omnichannel contact center web applications.

Goautodial can be used for various types of voice and non-voice multi-channel contact center applications like – Customer Relationship Manager (CRM), Live chat, Ticketing system, Email, Predictive dialer, Inbound IVR, Social media, etc.

10. FreePBX

Notable Features –

  • Most FreePBX commercial modules are included
  • Zulu Desktop, CRM, and other UC features are integrated
  • Full admin control through an easy-to-use interface
  • Sangoma handles all kinds of commercial support
  • Commercial modules can be deployed to extend capabilities
  • Delivers premium support and advanced training program


Positives Negatives
  • Extend functionalities with modules
  • Knowledgebase and FreePBX wiki
  • Excellent call quality with SIP trunking
  • VoIP gateways are good for legacy connections
  • Advanced SIP compatibility
  • FreePBX wiki for support
  • Hosted Service Provider model is the only medium of service 
  • Voice call quality is poor 


FreePBX is another great open-source GUI (Graphical User Interface) for managing Asterisk, telephony server, and voice-over IP. This web-based platform is licensed under GNU General Public License. It is specially designed for IP Phones, SIP Trunking, and VoIP gateways.
It says –

FreePBX stands for Freedom

That’s because it’s the most popular open-source IP PBX in the world. A community of developers works under FreePBX for simplifying complicated phone system software. FreePBX offers the necessary tools that are required for a tailor-made phone system.

People often ask these questions regarding VoIP solutions –

1) What is a VoIP softswitch?

Ans: VoIP Softswitch is a software-based solution that manages voice traffic and routes calls over a reliable VoIP network. They are often used for VoIP call center solutions. To be more precise, they are used as VoIP call center software.

There are 2 types of VoIP Softswitch. They work in the following way –

2) What is a VoIP call center?

Ans: The call centers that use voice over internet protocol to make internet phone calls rather than traditional analog calls are called VoIP call centers. Softswitch is generally used as software in VoIP call centers. So, these VoIP solutions are essential for VoIP switching.

3) What is a class 4 Softswitch?

Ans: A Class 4 Softswitch is used for making calls between suppliers. It routes large volume VoIP calls over long distances. Large companies who want to establish VoIP interconnected servers, use class 4 VoIP Softswitch. This type of Softswitch is important for generating VoIP traffic and services while using multiple IP networks.

4) What is a class 5 Softswitch?

Ans: A class 5 Softswitch is used for connecting suppliers with real clients. These clients are the ones who make and receive calls. They are also known as end-users in VoIP telecommunication. Class 5 Softswitch is important for connecting phones and other devices among end-users. Calls are routed to the exact SIP addresses, IP addresses, or DID numbers through a class 5 Softswitch.

5) Is there any difference between class 4 and class 5 Softswitch?

Ans: We have shown a table for direct comparison between class 4 and class 5 Softswitch –

Class 4 Softswitch Class 5 Softswitch
Definition A Softswitch for routing calls between suppliers A Softswitch for making the connection between supplier and end-user
Connection Only suppliers Suppliers and end-users
Volume of calls Large Small
Number of features Few Many
Security features Several security features Several authorizations
Billing interface Needed maximum time Not necessarily needed 

6) Where is the VoIP Softswitch used?

Ans: For processing media streams, controlling calls, and signaling; a VoIP Softswitch is used as a component of the core of a telecom network. As a result, the server gets the full potential of IP PBX call features.

7) What is SIP?

Ans: Application layered signaling is provided by SIP or Session Initiation Protocol for creating, modifying, and terminating multimedia sessions with multiple users on a telecommunication network. IETF (Internet Engineering Task Force) is the one who set this protocol.

Voice or video conferencing, VoIP internet phone calls are the results of multimedia sessions that are created by SIP Softswitch.

Ending thoughts:

We hope you have found the desired whole VoIP Softswitch from our selection. In the end, it depends on your criteria and business requirements. It also depends on the type of your organization.

You may need class 4 or class 5 Softswitch defending on purpose. Again, some features of your Softswitch may seem important to you, while some may not.

—  We also hope you have found this article really useful. Stay tuned with us for more insightful content like this.


I'm Russell, our go-to expert for VOIP softswitch server installation. With hands-on experience in deploying Sippy Softswitch, MVTS Pro, iTel Switch, and MediaCore Softswitch, he's the guru you can rely on. As a key contributor to vpsvos.com, Russell simplifies the complexities of server setup, configuration, and troubleshooting, making the world of Voice over IP accessible to all.

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VPSVOS Communications is a registered company in the United States of America. Registered Office: 19854 Michigan Avenue Brekford, CA 599780 USA.
OUR LOCATIONSWhere to find us?
Stay up to date with the latest news about VPSVOS Communication, events, special offers and more by connecting with our social media.

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