SIP Trunking

Take advantage of VoIP without replacing your current PBX

SIP: Session Initiation Protocol


SIP is the technology used to carry voice calls over a data network. A SIP Trunk is a virtual line based on Voice over IP technology (VoIP) that uses your internet connection to manage incoming and outgoing calls when connected to a local phone system (PBX). These phone lines are “software” based, and not delivered physically but through your internet connection.

In summary, SIP Trunking is a great option for organizations who want to take advantage of VoIP’s features such as unlimited calling and lower costs, but are not yet ready to take their phone system entirely to the cloud. Instead, they only replace the traditional phone lines with VoIP, moving one step toward the cloud.

SIP_Icon

Say goodbye to toll and long distance charges with GreenLink SIP plans!


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With GreenLink, your existing PBX is able to take advantage of VoIP technology, using an internet connection to transmit calls instead of physical phone lines. This means you don’t have to pay the ever increasing cost of traditional phone service.

Instead, your existing PBX is hooked into the almost free internet highway. The benefits are instant:

  • Unlimited calling within the U.S., Canada and Puerto Rico
  • Ability to add phone numbers in any U.S. area code
  • Add trunks as your business grows, without waiting for installers to run new lines
  • Up to two open channels per SIP trunk, potentially doubling your call capacity
  • Ability to add SIP even if your PBX is not SIP compatible

SIP has never been easier!


Use GreenLink’s SIP services to add SIP (VoIP) phone lines to your existing phone system, and leave your old phone company behind.

Traditional phone service can get expensive, fast!


If you have a PBX telephone system, you’re probably used to seeing your physical phone connected via cord to a phone jack in the wall. Phone lines run through your building, then outside, and connect to a telephone pole.

Your phone company then charges you for every call you make, at a rate which enables them to pay for, maintain, and repair these aging systems. Every time you need a new line, they charge you again for the new installation and the upgrade to your calling plan.

Different phone carriers also own different stretches of phone line, so your phone company can charge you extra for every call that goes outside your area code, or your state. Most phone companies also sell minutes in bundles only – so they can then charge you for every extra minute used over your allotment.

Traditional_PBX
LongDistance_Call

Traditional phone service can get expensive, fast!


SIP_Trunking_Diagram

If you have a PBX telephone system, you’re probably used to seeing your physical phone connected via cord to a phone jack in the wall. Phone lines run through your building, then outside, and connect to a telephone pole.

Your phone company then charges you for every call you make, at a rate which enables them to pay for, maintain, and repair these aging systems. Every time you need a new line, they charge you again for the new installation and the upgrade to your calling plan.

Different phone carriers also own different stretches of phone line, so your phone company can charge you extra for every call that goes outside your area code, or your state. Most phone companies also sell minutes in bundles only – so they can then charge you for every extra minute used over your allotment.


GreenLink’s SIP Trunks
are only 

$24.99

per trunk, per month.
Part # SIPUNL2W

Each trunk includes:

  • 2 call channels per trunk
  • Free DID per trunk
  • Free porting
  • Toll Free Number (Usage at $0.039 cents per minute)
  • Unlimited calling within the U.S., Canada and Puerto Rico
  • Instant upgrade capabilities
  • Endless Scalability
  • 12 month agreement

Ready to talk?

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