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4 Reasons to Invest in SIP Trunking Infrastructure

Friday, August 5, 2016 - 10:45
SIP Trunking Infrastructure

Once upon a time when phone calls all travelled across the PSTN (Public Switched Telephone Network), companies would buy a dedicated line or bundle of circuits called a trunk from their service provider. Nowadays, trunking has evolved into present day IP trunking using Session Initiation Protocol (SIP). SIP was developed by the Internet Engineering Task Force (IETF) as a standard protocol for beginning an interactive user session involving multimedia components like video, voice, chat, gaming, and virtual reality.

The primary difference between traditional trunks and IP trunks is that instead of physical wires connecting the business and service provider, SIP trunks instead make a logical connection from one point to another over an IP connection, oftentimes across the Internet.

SIP trunking provides big benefits to companies but many people don’t understand what it is or what it can do. Watch the video below for a quick tutorial on how SIP trunking works and then read on to learn about the benefits it can deliver to your business.

The Business Benefits of SIP Trunking

1. Cost Savings

SIP trunking offers several ways to reduce your business’s communication costs. If you have SIP trunks in place, you don’t need to buy ISDN, BRIs (Basic Rate Interfaces), PRIs (Primary Rate Interfaces), or local PSTN gateways.

With the inherent extra capacity built into an internet connection, there is no need to purchase additional bandwidth for VoIP calls. Voice and data can run over the same lines, saving on infrastructure costs required when running separate networks.

SIP trunking also saves on long distance charges. Since a SIP provider handles the PSTN connection to the internet, they are able to connect each call as close to its final destination as possible. This results in major savings for companies doing a lot of long distance or global business over their voice lines.

West’s SIP trunking solution, MaxxConnect, delivers nationwide dial tone, inbound and outbound calling, unlimited on-net and local calling, and competitive long distance and international rates. SIP trunking gives your enterprise the ability to set up virtual numbers in other geographic areas, enabling callers to use these numbers instead of pricier 800 numbers.

2. Remote Connectivity

As many traditional VPN users know, connectivity to the network while travelling can be hit or miss depending on the strength of your signal, local firewall configurations, and so on. When SIP trunking is implemented with SIP-specific remote connectivity solutions, remote users are able to negotiate with most non-SIP firewalls and NAT (Network Address Translation) devices that are often found in hotels, residences, and other similar locations. This capability makes your sales staff and remote-connected vacationers happy, as staying continually connected to the office – at least at some level – has become commonplace in today’s society.

3. Enhanced Quality of Service (QoS)

Some providers, including West, offer private MPLS (Multiprotocol Label Switching) networks to give the carrier different options for call routing and bandwidth usage. In an enterprise set up, the burden is then placed on the service provider to meet QoS standards. When the right QoS prioritization and admission control is put into place at the enterprise’s end – using a SIP-capable firewall solution not standard with a typical IP-PBX – QoS can be assured at the end-user’s network.

With a SIP-enabled firewall installed, combined with a SIP trunking solution, enterprises are able to enhance their VoIP service experience at a low cost, and with the proper security measures in place. Furthermore, if there are still concerns with QoS when implementing SIP trunking, your enterprise can simply install a QoS router at one or both ends of the trunking setup.

4. Improved Security

As vital as it is to deploy a SIP-enabled firewall for improved QoS in a VoIP environment using SIP, it’s by far the best defense against harmful network traffic across your infrastructure. SIP proxy technology protects the network using:

  • Advanced filtering
  • Verification and routing
  • Control over whether media ports are opened or closed

Some SIP-enabled firewalls also offer signaling encryption using Transport Layer Security (TLS) and media (voice, video, etc.) encryption using Real-time Transport Protocol (RTP).

A SIP-ready firewall in your environment is to ensure proper authentication with your service provider. If you already have traditional firewalls as part of your current network infrastructure, you may want to install an add-on solution that gives your enterprise the extra security features of a proxy-based SIP security and control device without the cost of extra equipment.

A SIP-enabled firewall or similar device can also provide complete VoIP redundancy. In this arrangement, traffic can be routed to a backup carrier if the primary carrier is not available. In a proxy-based firewall solution, the company may be able to use the device for local call management, in case the service provider is unreachable. The SIP-capable firewall can even route calls to a local PSTN gateway if all service provider connections are inaccessible. Plainly stated, SIP trunks allow your enterprise to automatically re-route phone calls to other locations if it becomes necessary.

SIP Trunking is Here: What are You Waiting for?

With all of the many benefits SIP trunking can offer your business, there’s no reason to wait. Now is the time to build your SIP trunking infrastructure. Don’t wait to save your company in operating costs, accessibility, QoS, security, business continuity, and so much more. You can learn more in our SIP trunking ebook. If you have questions, reach out to us with the form on the right side of this page!