SIP Trunks

Moving from the PSTN in minutes: Scalable, Reliable, Future-Ready.

SIP Trunks Image

FQDN and credentials based authentication

TLS encrypted

SMS Support

Fax Support

Calls to 01, 02, 03 and 07 included

Unlimited DDIs
(No monthly rental)

Competitive call rates

No long term commitment

No setup fee

Setup via your customer portal

SIP Trunking Designed for 3CX

Businesses are replacing traditional PSTN with IP telephony, opting for SIP trunks - virtual phone lines that enable internet calls via SIP.

Yellowgrid offers seamless SIP Trunking through an easy-to-use portal and adaptable APIs, giving customers full control over their global communications with ease.

Benefits to Your Business

Future Proofing

As the traditional PSTN networks are phased out, SIP trunking ensures your communication infrastructure remains up-to-date and compatible with the latest technologies.

It allows businesses to leverage their existing SIP-enabled PBX hardware, reducing the need for costly upgrades.

Scalable & Flexible

SIP trunks are a cost effective way to upscale or downscale without new hardware.

Whether your business is experiencing a busy period or relocating. With number flexibility, SIP trunks are not bound to a specific location. Easily add channels to handle increased call volumes, ensuring you can manage this seamlessly without any business disruption.

Cost Effective

SIP trunking is a cost-effective solution for modern businesses, consolidating voice and data services into a single IP network to reduce the need for multiple lines, ensuring lower monthly bills.

Billing Delivery

Invoices are provided via email, SFTP, API or the customer portal.

Click the download button to receive a sample of billing data, including SDR/CDR.

Download Sample

How Does It Work?

Set up an account

Log in to your customer portal

Select Trunks - New Trunk

Trunk ready in minutes

Become a reseller

*Fair usage policy applies 5000 mins to 01, 02, 03 per channel + 2000 mins to 07 per channel. Calls to 07 are free for the big four mobile phone network (EE, O2, Three and Vodafone)