Is SIP Trunking on your horizon?
This white paper discusses one of the critical considerations of migrating from TDM to SIP Trunks – that of understanding current call activity and volumes across your existing VoIP environment. Before you adopt SIP trunking, it’s wise to analyze your existing VoIP and UC environment to ensure your implementation is as successful as possible

The Financial Benefit of SIP Trunk Consolidation
SIP Trunking is now a well proven technology, with many Carriers offering this service, both domestically and internationally. Typical savings from using SIP Trunkingcan range from 25% to 50%.

How to leverage SIP trunks for UC deployment & Cost Reduction
SIP Trunks, session border control and session management can help IT organizations support an increasing number of secure, low-cost, reliable communications channels with high connection quality. They can also facilitate deployment of unified communications services and applications.

HD VoIP Sounds Better
High Definition increases call intelligibility, enhances the user experience and improves productivity for many speech-oriented applications such as call centers and conferences.

SIP Market Overview
This paper summarizes where SIP has come from, how it works, and what makes it such a useful protocol. It then describes how SIP is used in applications including telephony, conferencing and messaging, and how it is being extended to provide innovative services and accommodate the requirements of real-world deployment, where NATs, service level agreements and regulators exist.

Bringing VOIP to SMBs
While it is difficult for SMBs to compete against the advantages enterprises have with scale, they can compete by being more agile and responsive with customers. Adopting modern communications solutions such as VoIP helps SMBs do this, and communications service providers have recognized the opportunity to help their SMB customers and their networks have evolved considerably to support these new solutions.

Dual Redundant SIP Service
SIP by its nature operates in a distributed network and benefits from basic levels of recovery inherent in IP-based networks. However, in the connected world, the need for network resilience and fault tolerance imposes a higher burden. To achieve the required level of service, the network is expected to maintain steady-state calls (connections) all the time.

Enterprise Session Border Controller
VoIP does away with the (now) virtually impervious PSTN. With VoIP, voice is just another data service, and it’s a data service that commercial firewalls and ALGs don’t handle very well  Traditional firewalls are typically designed to permit data sessions only when they’ve been initiated from behind the  firewall. Incoming sessions are blocked unless the SIP (Session Initiation Protocol - signaling) and RTP (Real Time Protocol – media) ports are unblocked completely, which would an unacceptable security exposure. An Application Level Gateway function is  required for VoIP, just like one is required for email, web, and file servers.