IP Centrex

IP Centrex is a service where the call platform and PBX features are hosted at the service provider location. The business end users connect via IP to the provider for voice service.


.e4 Technologies - .e4 provides powerful, integrated IP Communications enterprise class services that provide the SMB customer to configure the exact voice, video, messaging and collaboration services they need in just minutes- all delivered on-demand.

CALL 877-434-VoIP

  • VoIP and PSTN Service
  • PBX and ACD
  • Web, Audio & Video Conferencing
  • Skills Based Routing
  • Private/Encrypted and Public IM
  • Voice and Data Archiving
  • Reporting and Archiving
  • PSTN Gateway
  • SIP Hardware Compatibility
  • CRM Integration
  • Web Contact Center

Ip-Pabx.com IP-Pabx.com - First of its kind Hosted IP Based Pbx system offering from A-Z Solution from one provider. Totally Hosted Web Based Pbx System, Very Low priced starting 199$. You place an order, choose your Country Code and Area code for your incoming lines, choose extension quantity, They ship you pre programmed 99$ ip phones, you plug them on the internet, and wala, you have a pbx system up and running. the extensions can be anywhere in the world, and they will work fine. visit the web site for demo, or email us for a free test account. You get Voice Mail, Fax to Email, Web Voice Mail, Call Recording, 20 IVR's. API to integrate your own applications.

OnSIP Virtual PBX (a.k.a. IP Centrex) by Junction Networks, the IP communications veterans.

OnSIP has been recognized by INC. Magazine, Voip-News, Internet Telephony and others as a leading service for business communication.

Ted Stevenson of VoIP Planet called it “a pretty eye opening solution that moves business telephony into a very new place.”

The most popular package for $99 / month includes all the features needed for a 25 person company!

This IP Centrex Service features:

  • No cost per seat or user, pay only for usage of features and minutes
  • No cost for rarely used conference room and lobby phones
  • Mobile office connectivity – register any number of phones to ring simultaneously for the same extension
  • Use any SIP phones or soft phones
  • All you can eat conference bridge
  • Free extension to extension calls
  • No hardware to buy or manage
  • Free internet to internet calls
  • Easy 10 minute setup
  • Firefox plugin for one-click calling and website click to call are free add-ons
  • No contracts, there are many free trial options available


iTel Switch
iTel Switch is a single Softswitch platform for global Retail, Wholesale, Calling card & Call shop business. Being a highly customizable and scalable VoIP Softswitch with integrated billing, it serves as an ideal platform for all the VoIP service providers who want to provide a wide range of VoIP services.

Get a iTel Switch Free Demo:

Key Features

● Rate Plan Management
● Flexible & Advanced Routing
● Live Call Monitoring
● Multilayer Security
● Analysis & Reporting
● Behavioral Based Alarm System
● Call Simulator for Route Checking
● Client Management
● DID Management
● Payment Management


Centile Istra SP is a SIP carrier-grade Unified Communications services platform for services providers (fixed-line operators, integrators, PBX dealers, and SaaS providers) offering IP Centrex services to enterprises of all sizes over any network, and on any terminal.

ISTRA SP platform benefits:

- Field proven and agile
- Feature-richness including supervised conference, unified messaging, auto attendant, boss/secretary filtering, call restriction, groups management, Interactive Voice Responses (OVRs), automatic call distribution (ACD)
- Easy, rapid implementation and management
- Multi-tier ergonomic administration interfaces
- Automatic provisioning of terminals
- Open and distributed architecture based on industry standards protocols
- Customized web management portal for end user customers with presence and instant messaging
- Optimal management for network troubleshooting (NAT traversal, voice quality)
- APIs allowing third-party developments and integration with external components (billing systems, CRM…)
- Support of a wide range of certified terminals


MERA IP Centrex is an ideal hosted solution for small and medium-sized VoIP providers.

This product offers the following feature set:

  • ANY-to-ANY codec conversion for seamless interoperability of terminal equipment
  • RADIUS AAA for communication with external billing systems
  • Partitioning capability to create multi-layer switch partitions and rent them out to sub-providers
  • User – friendly WEB interface for flexible system management and configuration by the system administrator and subscribers
  • Compatibility with standard hardware of all well-known vendors to reduce the system’s total cost of ownership and maintenance
  • Unlimited scalability for gradual capacity growth to meet communication needs of users


NetSapiens IP Centrex delivers the best return on investment to VoIP providers that wish to deploy IP Centrex services.

The NetSapiens IP Centrex solution delivers all the features you expect from a top-tier vendor:

  • Integrated Session Border Controller
  • Multi-tiered user portals with delegated administration and reseller support
  • Brandable web portals for all system and user levels
  • Flexible partitioning for wholesale and retail customers
  • Customizable dial plans per domain or user group
  • Customizable IVR and system prompts
  • Comprehensive support for NOC staff with BOSS
  • API for integration with existing OSS/BSS
  • Codec Agnostic with Pass-Thru
  • Integrated Billing and Accounting
  • Prepaid or post paid accounts with support for recurring charges
  • The ONLY Geo-Distributed fault-tolerant SIP softswitch for network redundancy
  • Primary, hot-standby Application Server configuration
  • Highly scalable, distributed architecture
  • Up to 10 million users and 40 million BHCA per system
  • 1000 concurrent calls on $1500 of hardware
  • Supports rolling, hitless Upgrades


Sonetel A free, global phone system for small and medium sized companies worldwide. This is a free IP-centrex service that can be connected to any phone company.

This product offers the following feature set:

  • Free Windows plug'n play softphone/client with HD voice (any other SIP phones can be used also)
  • Unlimited users worldwide
  • Unlimited on-net calling for free within the solution, and to any SIP-destination
  • Connect to one or more phone companies of your choice (free) - or use Sonetel's add-on services for phone numbers and low-cost calling to mobile phones/landlines
  • Call forward to SIP/PSTN/Extension on no answer
  • Call transfer
  • Call forking to all devices of each user
  • Presence
  • Chat
  • For more details see www.sonetel.com


Star2Billing S.L. - Star2Billing offers an IP-Centrex solution for VoIP service providers who wish to sell hosted PBX services to their customers. When combined with A2Billing, billing is available as well with termination and Least Cost Routing.

Vidanetwork Global Office offers premium hosted PBX services to small and medium sized businesses. Global Office offers all of the advanced features of Hosted PBX services including:

  • Free calls between extensions by 3-digit dialing.
  • Pay-as-you-go Long Distance and International calling at the lowest rates.
  • Self-management web interface to manage your PBX extensions, configure IVR, ACD queues and generate reports.
  • Local or toll-free numbers from USA, Canada, China, UK and other countries.
  • Voicemail, call recording, BLF, call monitoring tools and all other features.
  • Hosted CRM integrated with your Global Office.
  • Connect your own SIP devices, soft phones or download our free VoicePal app to your Android devices as your PBX extensions.
  • Online Sign Up, instant activation!
  • USA based supports, no contract.

See also

Created by: oej, Last modification: Tue 19 of Jul, 2016 (09:26 UTC) by reve_systems
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