Any small business with 30 or 40 telephone extensions needs the proper equipment in today’s high tech times. Those old clunky PBX systems are costly to maintain and becoming obsolete. VoIP technology is now making multi-office telecommunications a reality. VoIP technology relies on SIP trunking to handle multiple connections going through a single line.
Internet Telephony Service Providers send voice communications through VoIP networks through SIP trunking. SIP or Session Initiation Protocol allows multiple connections to go through a main line. Most dynamic networks can handle hundreds of simultaneous telephone connections at one single time. Digital phone switching is done by hosted Private Branch Exchange software. A PBX system first routes telephone calls through a company‘s internal network using VoIP communications to the ITSP through an SIP trunk, then the calls can either go to another VoIP connection or the call can go through to a traditional land line on a PSTN.
SIP trunking can be a partition between two different networks. These two networks are known as private domain and public domain. On the private domain network based calls can go through a company’s internal networks. Once the VoIP communicans reach the ITSP carrier, your call has reached the public domain and can be switched to a traditional land line. Most hosted VoIP carriers offer caller id, voice-mail, and 911 service. SIP trunking can provide a means for end to end encryptions to protect the privacy of your communications.
A good ITSP can host VoIP calls, SIP trunking and IP-PBX systems. The biggest advantage to this is being able to utilize call centers and multiple buildings across the globe as if they were all in the same building. This system is also redundant so if one call center goes down another one can be activated seamlessly. A complete digital telecommunication system also removes the need to maintain a physical hardware-based PBX system. Your company can focus on the day to day operations while letting your provider take care of your entire phone system. Before contracting with any corporate ITSP carrier for hosted PBX with SIP trunking, talk with your IT department on your companies needs.