Use GreenLink’s SIP services to add SIP (VoIP) phone lines to your existing phone system, and leave your old phone company behind.
SIP
SIP has never been easier!
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.


Bypass high costs of toll and long distance charges with GreenLink SIP plans!

With GreenLink, your system connects effortlessly into our SIP Trunk service using an internet connection to transmit calls instead of physical phone lines. This means you don’t have to pay the ever-increasing costs of traditional phone service anymore!
Instead, your existing PBX is connected to the PSTN network via the internet. The benefits are instant:
- Unlimited calling within the U.S., Canada and Puerto Rico
- Extra phone numbers in different areas and states, not just your local area code
- Instantly add SIP Trunks as your business grows, without waiting for installers to run new lines
- Up to two open channels on each trunk, potentially doubling your call capacity
Stop paying for legacy phone service and make the shift to SIP today. The only difference you’ll notice is your increased call capacity and decreased phone bill!
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