SIP Trunking

Quantum's SIP Trunking service is an extremely reliable digital voice service. SIP (Session Initiation Protocol) is a VoIP (Voice over Internet Protocol) technology that enables an ISDN-like telephone service to be run on top of Quantum's Internet access services.

Just like an ISDN PRI, SIP Trunking includes Direct Inward Dialing, which will allow the assignment of unique telephone numbers to individuals within your organization to efficiently route calls directly to their destination without having to first go through a receptionist, or auto attendant.

SIP Trunking is very cost effective for small organizations as only 4 trunks are required to be purchased, versus 23 for an ISDN PRI. SIP Trunking can also use lower-cost transport, such as our Business or Enterprise High Speed Internet, instead of a PRI's T-1 transport. SIP Trunking traffic is prioritized through Quantum's QoS-enabled (Quality of Service) network, which ensures excellent call quality.

Key Features:

  • Unlimited Local Calling
  • Competitive Long Distance and International Rates
  • Cost Effective
  • Direct Inward Dialing
  • Calling Number w/Name
  • Available with Quantum High Speed Internet
  • QoS to Ensure Call Quality


Please call us today at 410-239-6920 or 1-888-889-4NET, and let us help you select the SIP Trunking plan that best serves your needs.

Surcharges, taxes, and tax recovery fees may apply. Service may not be available in all areas, and service is subject to final confirmation by Quantum. All offers are subject to change without notice, and cannot be combined with other discounts or promotions. Other terms and conditions may apply.


Quantum provides service in Carroll County and the Baltimore metro area!


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Use of Quantum's services, systems, servers, and facilities, constitutes the customer's agreement with Quantum's Rules and Regulations, and the Quantum Service Agreement, both of which are subject to change without notice.


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