Advantages to Customers of SIP Trunking

SIP stands for Session Initiation Protocol and is a technology at the enterprise level for delivering multiple voice connections to a PBX or key system over an IP data connection. In order for a business to utilize SIP they must have a PBX with a SIP-enabled trunk side and their data provider must be able to deploy and switch SIP.

Hot Desk, GTi, University of Glamorgan

Hot Desk, GTi, University of Glamorgan (Photo credit: jisc_infonet)

SIP Trunks at the enterprise level of the network replace PRIs between the central office and PBXs. A PRI is a dedicated T-1 transport circuit and can support 23 bearer paths for voice, but a SIP trunk connection typically rides an existing data circuit and can be used to carve out as many voice paths as are wanted within the limits of the bandwidth available.

Following are the reasons that businesses want SIP trunks, and thus for carriers to sell them. This list is discusses the advantages for the small and medium business customer.

Saves Money. SIP generally saves money. SIP trunks replace PRIs which are inefficient. It is not unusual for a customer with a PRI to be using only part of the capacity and yet they have to pay for it all since it is a linear product. SIP trunks are typically carved out of a company’s data or Internet connection and can be sized as needed within the constraints of the bandwidth. It is typical for a business to cut their costs at least in half using SIP trunks compared to PRIs due to the efficiency.

More Efficient Use of the Data Connection. Most businesses will already have an Internet connection and SIP trunks are carved from those connections. Most businesses use their data connections in a bursty fashion, meaning there are times of the day when they use a lot of their bandwidth, but also many times when they use very little. SIP trunking can take advantage of the unused capacity in most company data connections. Companies often do not need to increase the bandwidth they are buy SIP trunks and can fit them into their existing data product.

Enables Unified Communication. SIP enables all of the various features that comprise unified communications such as access to the phone system from cell phones or tablets, integrated voicemail and email, video chat, instant messaging and other features that make businesses more productive.

Enables Upgrade to an IP PBX. Businesses more and more want the kinds of features that are available with an IP PBX and IP handsets. Many businesses are choosing to buy an IP PBX to get these features rather than buy IP Centrex from their telco provider. The general advantage for a business to have their own IP PBX is the ability to customize their communications network, something that many service providers do not offer with IP Centrex.

Allows Multiple Locations to Act like One. With SIP trunks and an IP PBX a business with more than one location can have a unified telephone system that brings the data and voice together for all locations.

Any carrier that sells enterprise data service to businesses should offer SIP trunks. Even if you sell IP Centrex, customers who prefer to have their own phone system are going to want SIP trunks.

Hosted IP Centrex Service

In a few other blogs I have referred to IP Centrex as a new service for businesses, so I thought I ought to explain the service. Hosted IP Centrex service uses data-centric phone sets to replaces key system, PBX system or existing Centrex service. The IP Centrex phones can be controlled by a softswitch or by connecting an IP PBX to a legacy switch.

A number of CCG’s clients are having success selling IP Centrex to business customers. The product includes the best features of a large PBX plus many additional “value added” services that are only available through IP based phone service. The product can be integrated with a subscriber’s computer systems to provide such features as dialing from Outlook, common databases for all employees, etc.

There is a wide range of phone sets available that include a screen that allows a caller to manage their calling. The product requires a customer to buy new IP handsets and many of my clients lease sets as part of the price.

This product has a large potential market since it can be tailored for the very small or very large business. It is easy for the carrier or the subscriber to customize features for each phone or for the whole system.

There are a number of benefits of this product to both the carrier and to subscribers. Some of the biggest advantages:

Benefits to the Carrier

  1. Can be sold to any business subscriber regardless of what service they had before. It’s a good replacement for B1’s, trunks or traditional Centrex.
  2. Subscribers become stickier to the extent you can get them hooked on custom features not available elsewhere.
  3. Allows a carrier to sell service outside your traditional footprint. You just need to find businesses that have a decent high-speed data connection. This also means you can sell voice services to all branches of a customer’s business and not just to those in your footprint.
  4. It promotes the Company’s data products and is easily bundled with data.
  5. The product has a lot of pricing flexibility and can be sold to compete with multiple B1’s or traditional Centrex. You should be able to profitably beat the price of any traditional phone product.

Benefits to Business Subscribers

  1. The Subscribers get a telephone system that equals the features of a high-end PBX.
  2. The Subscriber no longer needs to buy or maintain a PBX. The customer can buy the IP phones or lease them from you.
  3. Subscribers can portray a unified professional image to the public. Employees at remote locations can be integrated into the telephone system. And small companies can act like bigger companies by the use of the various features. Remote employees can be made to feel like a part of the Company.
  4. Subscribers can tailor the phone system and each phone to meet their needs. There are hundreds of features available including many that were not available on analog systems.
  5. Subscribers can easily manage the features available on each set using the Subscriber portal that allows for easy and immediate changes to the features on any or all phones.
  6. Phones are portable and an employee can quickly move their phone from desk to desk or office to office and keep the same extension, voice mail and features.
  7. Phones can be programmed to be nomadic (portable, but not mobile). This means that an employee can take the phone out of the office and work at home or in a hotel as if they were in the office.  All features and functions of the phone remain unchanged.