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Why CallTower for SD-WAN


Fully Redundant Architecture

CallTower brings SD-WAN results by connecting data centers directly to the domestic network backbone and POPs of SD-WAN carriers. Customer traffic hops on this advanced network at the closest POP, delivering a fully redundant architecture. This connection makes CallTower’s SD-WAN solution among the most easily implemented and provides top-tier internet performance and uptime.

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SD-WAN Fully Redundant Architecture

Key Features

Intelligent Load Balancing

Monitors circuit conditions (up to four circuits), adapting load balancing in real-time to match traffic needs to circuit performance.

Bi-directional Dynamic QoS

Automatically prioritizes VoIP and other real-time traffic across Internet connections, even with varying bandwidth. No need to establish complicated QoS policies.


Same IP Address Failover

We issue customers a dedicated IP block out of our gateways. This allows failover between circuits without dropping sessions, as the IP does not change.

VPN Traffic Optimization

Optimizes VPN traffic for stable site-to-site connectivity over ISP connections. Enables customers to migrate from MPLS to more ubiquitous and cost-effective broadband.

SD-WAN vs MPLS & Public Internet


40% lower costs + 95% bandwidth savings

Deployed within days

Improved cloud performance with more solution options

MPLS & Public Internet

MPLS is expensive and Public Internet has lower
bandwidth options

MPLS can range anywhere from 60 to 120+ days to deploy

Public Internet delivers a subpar collaborative experience

The Secret Behind  Better Internet

The secret behind better Internet is simple and it lies within the cloud. Access to the cloud is too important to rely on a single path. You shouldn’t have to worry about Internet connections, performance and outages. SD-WAN provides a stress-free way to utilize the multiple providers of your UC systems and enhance your Internet experience.

More Reliable Network

The robust applications of a UC system call for a better, more reliable network. The combination of UCaaS and SD-WAN will provide the quality and experience for real-time applications while improving overall network performance for domestic and international organizations.


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