SIP Trunk Service

CornerStone realizes that not all businesses are alike. Therefore, we have created a SIP trunk service for those companies looking for a fast, scalable, and easy-to-implement solution that works with their existing telephone system. Introduce direct-inward-dialing (DID) phone numbers without the expense and constraints of a traditional PRI circuit. And along with your DID, you’ll have unlimited usage and a rich feature set.

CornerStone’s session initiation protocol (SIP) trunking leverages your existing in-house technology to support local and long-distance voice calls, and monthly communication expenses. Rely on our carrier-grade IP network to expand your business communications to include any IP-enabled device, including: SIP phones, softphones, PDAs, or laptops.

Service activation typically requires no additional hardware. We will connect your Internet protocol PBX (IP-PBX) over your current Internet connection(s) or leased circuits, to our IP-enabled Class-5 switch. Our robust core network, edge devices, and firewalls ensure your traffic will be transported over secure connections. Benefits of CornerStone’s SIP trunking:

• Overflow calls controlled by using SIP trunking in conjunction with your existing network connections
• Cost-effective alternative to analog or TDM circuits
• Scalable to accommodate business growth and seasonal activity and to establish connectivity with field offices, road warriors, and work-from-home employees

For more information, contact a CornerStone sales representative at 866 922.9111, or use the Click 2 Chat button to chat with a customer service representative

_{Please note: There is an installation fee for SIP trunk service. The fee will be waived during the promotional period, offer ends soon.}