Scalable. Flexible. Cost Effective.

Businesses that have made the investment in IP telephony solutions often look to deploy SIP trunking to achieve the full scalability, flexibility and cost savings of IP communications.

SIP Trunking, from OneStream Networks, provides all the standard trunk features users have come to expect from traditional carriers with the reliability and redundancy of a multi-carrier MPLS network and powerful call management features that provide business continuity and disaster recovery.

OneStream Offers a Comprehensive Suite of Services

OneStream Networks is among the few providers with the experience and flexibility to deliver fully-managed SIP Trunking service over either OneStream’s MPLS network or via a third–party MPLS provider. This approach offers the convenience of preserving existing network connections, helps reduce deployment time and provides the efficiency and economic benefits of network convergence.

In addition, enhanced features such as enterprise-wide calling plans, quality of service (QoS) management and worldwide local numbers and portability provide the simplicity and performance necessary to centralize multiple services and to eliminate unnecessary vendors, facilities and costs.

OneStream’s SIP Trunking provides the flexibility, scalability and control enterprises need to maximize their investment in a unified IP communications platform and network – delivered by a partner committed to exceptional support. All SIP Trunking services include OneStream SmartCare, a comprehensive suite of services including 24/7 network management, proactive monitoring, interoperability lab services and global deployment expertise.

SIP Trunking, combined with SmartCare, offers enterprise customers the flexibility of a global MPLS network, the performance of a high-availability, geographically redundant network, the confidence of certified interoperability and the support of a global team focused on the customer’s success.


SIP Trunking, from OneStream Networks, uses Session Initiation Protocol signaling and a native IP-based facility to manage all voice traffic between a customer’s IP PBX platform, MPLS-based global private network, and the Public Switched Telephone Network (PSTN).

Global Coverage

Local DID numbers and number portability in over 80+ countries and 8,000 cities worldwide.

Network Flexibility

Increase service delivery options such as capacity, geographic diversity and network redundancy with Global SIP Trunking service delivery over virtually any MPLS provider network.

Complete Service Features

Local, long distance, on-net and toll-free, directory assistance, caller ID, directory listing and 911/E911 service.

Web -based Service Management

Full control of enterprise voice services including access to real-time call detail, utilization reports and ticket tracking



Consolidate local lines and trunks on OneStream’s network to reduce hardware costs, reduce trunk costs and to eliminate multiple vendor purchasing.


Avoid costly outages with network and geographic redundancy options and pre-defined contingency routing.


Reuse existing legacy PBX line/trunk cards or leverage IP-PBX native-SIP trunk connectivity.


Seamlessly add capacity for growth or new locations and avoid lengthy installation intervals.


Eliminate multiple vendors globally with converged voice and network services through one provider.

IP-PBX Integration

OneStream Networks supports a global selection of standards-based solutions. With a commitment to best-in-class capabilities and interoperability with leading IP-PBX manufacturers, OneStream ensures rapid deployment, reduced costs and simplified administration.


Legacy PBX Integration 

What if our phone system is not SIP-capable?

OneStream Networks can help your business gain the benefits and flexibility of SIP Trunking, even if your phone system uses traditional copper lines and ISDN PRI. With the addition of an Integrated Access Device, OneStream Networks connects your phone system to Global SIP Trunking.


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