Flexibility and Integration

See how our trunking services can integrate with your existing PBX to bring higher-capacity calling to your office.

SIP and PRI Trunking

Get the most from your on-premise phone equipment and PBX. Our trunking solutions provide crystal-clear calling, easy scalability and cloud-based features that help enhance employee productivity.

There are many considerations when choosing the right kind of trunking service for your business. Are you planning to purchase a PBX or work with existing equipment? Do you want complete control over your phone system? Do you have staff with capacity to handle the IT demands? How will your phone system be used the majority of the time? Armed with the answers to these questions and the experience and knowledge of your Cox Business Representative, we'll find the solution that works best for you.

PRI: A Solid, Trusted Solution

When advanced digital features and superior connectivity make the top of your list, PRI trunking is the ideal solution for your business. Cox Business PRI Trunking Services allow for voice and faxing, which can be done simultaneously with reliability and call clarity. When you enhance your service with our Personal Mobility feature package, employees can work remotely — with the same superior features found in the office.

SIP: Flexibility to Communicate More Effectively

SIP Trunking integrates with your premise-based SIP PBX. It's a tailored, cost-effective voice solution with scalable features and end-user mobility options that increase productivity. SIP Trunking has the option to burst the voice trunk group, which provides temporary use of additional calling capacity as your business needs it. Plus, with Business Continuity features that can be managed online via MyAccount, you can keep your business running, even during service disruptions.

PRI Specifications

Cox PRI Digital Trunk. Supports up to 23 individual voice-grade trunks and allows control of individual channels of the DS-1 pipe for PBXs, LAN gateways and host computers with: Interface of 1.544 Mbps with ISDN signaling to a PBX system, LAN or host computers.

  • Loop start
  • Ground start
  • Direct Inward Dialing (DID), Direct Outward Dialing (DOD) and Two-Way
  • Dial pulse signaling
  • Automatic Number Identification (ANI) on dedicated service
  • Dial Number Identification Service (DNIS) on dedicated service
  • Handoff interfaces of RJ48X, DB15, RS232 and RS530
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Minimum-term service agreement required. Telephone modem equipment may be required. Telephone modem uses household electrical power to operate and has backup battery power provided by Cox if electricity is interrupted. Telephone service, including access to e911 service, will not be available during an extended power outage or if the modem is moved or inoperable. For long distance service, Cox must be selected as both primary interexchange carrier and local interexchange carrier. Nationwide long distance minutes apply only to outbound, direct-dialed calls within the United States and to Puerto Rico, U.S. Virgin Islands, Northern Mariana Islands and American Samoa. Early termination of service agreement may result in re-rate of long distance minutes, see service agreement for details. Other restrictions apply. Telephone services are provided by an affiliate of Cox Communications, Inc.

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