IT Consulting , Solutions & Service

Advantages of Using VoIP Solutions

The proposed solutions significantly reduce costs for long-distance and international calls, regardless of the existing telephony infrastructure within your organization.

Cost Reduction

The cost of VoIP calls depends solely on data volume, not on distance. Low communication costs are achieved through:

  • Internet traffic charges being independent of distance

  • The ability to use existing network infrastructure

Flexible and Convenient Billing

VoIP solutions allow for highly flexible and convenient billing systems. Unlike traditional telephony, VoIP billing does not require additional hardware; all payment system functionalities can be implemented in software.

Corporate Solutions for Reducing Long-Distance Costs

When assessing the economic efficiency of VoIP in your organization, consider the volume of long-distance/international calls, the cost of dedicated IP or Internet access, and the expected increase in operational efficiency from adopting new technologies.

VoIP equipment setup does not require prolonged service downtime — deployment takes only a few minutes. The devices operate transparently for users and do not require any changes to the standard dialing habits for internal or external numbers. Existing PBX features such as call transfer, hold, and conferencing are fully retained.

If your office lacks landline connections, installing an IP gateway provides access to direct phone numbers, low-cost long-distance calls, and allows integration of a PBX system to expand internal user capacity.

VoIP devices can be configured to route calls based on the dialed number — either to the public switched telephone network (PSTN) or to other IP gateways or service providers over an IP network. Devices can operate behind firewalls and routers with NAT support.

Unified Corporate IP Telephony Networks

For companies with geographically distributed structures, IP gateways enable the creation of unified corporate IP telephony networks with:

  • A single internal numbering plan

  • Local PSTN access from any branch

  • Encrypted communication for confidentiality

Each device supports integration with automated billing systems and call statistics applications.

These solutions represent typical office telephony scenarios using VoIP technology. All hardware solutions offered can be connected via the Internet to any VoIP provider worldwide.

Deployment Scenarios

Scenario 1:
Placement of a VoIP gateway "in-line" between the office PBX and the public telephone network. The gateway handles call routing based on predefined rules — to either the PSTN or an IP network. Incoming calls from the PSTN are transparently passed to the office PBX.

Scenario 2:
For offices without access to the local PSTN but with dedicated Internet access. The gateway enables:

  • Assignment of direct and multi-channel numbers from a VoIP provider

  • Low-cost international calling

  • PBX integration behind the gateway

Scenario 3:
Deployment of a digital VoIP gateway with multiple E1 interfaces within the telecom infrastructure of a large organization that uses digital trunk lines.

Scenario 4:
The VoIP gateway acts as an internal extension of the office PBX. To make an IP call, users first dial the gateway's extension number, then enter the destination number.

Example: Building a Corporate Voice Network

A corporate/private voice network links remote offices and branches with headquarters into a unified IP-based virtual voice network. Features include:

  • A universal numbering plan

  • Significant savings on communication costs using intelligent VoIP gateways

  • High-quality voice transmission, even over public Internet channels

  • Resilience with fallback to PSTN in case of IP network failure

  • Full preservation of investments in legacy telephony infrastructure

Mobility & Flexibility

  • Seamless access for mobile users worldwide

  • Ability to use full PBX functionality from any Internet-connected location

  • Integration with local PSTN systems at every branch

  • Dynamic routing between internal users, between branches, or between any PSTN subscribers via available VoIP gateways

Scalability & Optimization

The network architecture allows easy scalability in capacity and bandwidth with minimal additional investment. Based on the organization’s size, current telecom infrastructure, and inter-branch interaction policies, various configurations are possible. We offer tailored equipment packages to ensure reliable, efficient, and user-friendly voice communication at every location..

INTERNET STATION GROUP