A relatively new technology can be used to bring voice calls into the business phone system, reducing monthly costs and increasing reliability. It's called a SIP trunk and it's worth studying how it can benefit your business. The only problem is that your organization must use a VoIP phone system to take advantage of all the benefits, but in many cases, the monthly cost savings of converting to SIP trunks can cover all the costs of upgrading to all costs. VoIP phone system!
Most organizations with more than 50 phone users have a business phone system called Private Branch eXchange or PBX. The system allows users to easily call each other and share the circuitry provided by the telephone company for outside calls. The circuit that connects the service to the telephone company is usually a voice T1 called ISDN PRI, which can have 23 concurrent calls, typically costing $600/month. T1 can also be used for other purposes, including providing a data connection in the form of the Internet or a dedicated wide area network called MPLS. Since voice services and data services are required for all business locations, in most cases, each site has multiple T1 connections.
One of the big benefits of SIP trunking is cost savings. For example, an organization with 10 locations, each with voice T1 and Internet data T1, can significantly reduce its cost. Internet T1 costs about $600 a month, while MPLS T1 costs about $450 a month. By using SIP trunking and MPLS private networks instead of voice T1 and Internet T1, the cost of $12,000 per month can be reduced to approximately $7,000/month. This saves $5,000 a month to fund equipment and installation services for VoIP systems. If the system receives funding within a three-year period, it will provide a budget of approximately $180,000 for the new phone system.
Another advantage of SIP trunking is reliability. The call is sent over the data network to a voice gateway that can terminate the SIP call. This is an IP connection. If the first location to which the call is sent is not available, the second or even third location can receive the call. This means that if the remote office cannot be accessed due to a power outage or natural disaster, the call can still be sent to someone on the accessible phone system. This allows the organization to continue to provide customer service to the caller, rather than just sending a busy signal, which will be obtained by the caller if the call is directed to voice T1 terminated by the closed PBX.
SIP trunks can also be used to combine unused circuits from a telephone company. For traditional voice T1 circuits, if a location requires more than 23 concurrent calls to be completed, a second T1 must be added to make a total of 46 concurrent calls. The increased capacity is only available for this location. It is very different from SIP trunking. In most cases, the price of a SIP trunk is an aggregated concurrent call for the entire organization, which means higher utilization and lower monthly cost.
As with any other new technology, many details must be addressed in a SIP trunk deployment. When it is combined with telephone system conversion, there are more details and potential problems. For most organizations, the cost savings and improved accessibility and productivity through the new phone system make it worthwhile to convert. The combination of SIP trunking and VoIP telephony should apply to each organization's roadmap.
Orignal From: SIP trunk is an important reason for having a VoIP phone system
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