The communications market is in a transitional change at present. The speed of this transition has now accelerated with the announcement from BT that they will no longer support ISDN services from 2020. While many businesses have not heard about SIP services, the channels/lines provided on SIP already outweigh the number of ISDN channels throughout the UK market and SIP is becoming the new standard.
Advantages of SIP
SIP has a few key advantages over analogue or ISDN lines. Most significantly, telephone numbers can now be changed to become a SIP number and be used at any location in the world. SIP numbers can also offer cost advantages for line rental and call charges, as they can often be deployed over existing Internet connections. Traditional ISDN and analogue lines are universally available and have robust service levels from providers while SIP trunks are dependent on a quality and reliability of the Internet connection, which aren’t universally available. However, with the introduction of aggressively priced Internet connections, this is changing fast.
A SIP trunk can be deployed over the Internet or over a line that is dedicated to your business and that may or may not share bandwidth with other Internet traffic. A dedicated line between your business and the SIP provider usually costs the most, but it can typically carry the most simultaneous calls and offers the highest security and reliability. If your business has lower call volumes or less stringent security and availability requirements, another connection type might make sense for you.
Essentially, it’s all down to connectivity. Traditional broadband connections are being rapidly replaced with new and improved fibre services, which are much more able to cope with the simultaneous demands of today’s business world. Improvements in fibre technology are such that companies are finding themselves able to take advantage of technology that they couldn’t before. As the Government commit themselves to ensuring the UK has wide access to superfast fibre broadband, the business world is significantly benefiting Smaller companies can reach more customers in an increasingly diverse number of ways, and mid-size to larger enterprises are finding they can make the most of powerful tools and systems, and encourage more flexible working practices while also preparing themselves for future growth.
Upgrading a business broadband connection to a dedicated, superfast connection often prompts companies to review their current communications infrastructure at the same time this is the point at which a shift from ISDN to a SIP trunking model is proposed.
Ultimately, the underlying connection the business chooses to deploy will dictate the call quality that can be expected. SIP or VoIP initially got a bad reputation due to the services being deployed on unsuitable connections such as ADSL services which are contented technologies and have no robust service level, so are not suited to voice. The connection choice the business makes now is critical as it will impact on the SIP quality, so the selection of the connection and understanding of future requirements needs to be clearly defined.