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VOIP and SIP Services

National U.S. Local Number Availability

  • Nationwide coverage. Choose from thousands of cities.
  • Select local numbers from any state, regardless of actual location.
  • Port your existing numbers ($14.99 per carrier regardless of quantity).
  • Flat rate of $0.012/min. with unlimited simulteanous calls
  • Instant activation of numbers in inventory.
  • Numbers are issued and ported from: AL, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI

Toll Free Numbers

  • Obtain a new toll free number or transfer your existing number.
  • Flat rate of $0.029/min. with unlimited simulteanous calls
  • Instant activation of numbers in inventory.

E911, Caller ID and Caller Name

  • We offer advanced calling services including E911, Caller ID, and Caller Name (CNAM).
  • E911 enables automatic emergency call routing and presents address information to the 911 operator.
  • Caller ID presents the number of the caller on inbound and outbound calls
  • CNAM allows you to configure the name that appears in caller ID for your outbound calls
  • E911 location database entries are $4.99/DID per month.
  • Caller ID and CNAM are included at no extra charge.

VOIP Outbound Calling (also called termination)

  • SIP Affinity provides complete outbound dialing services for global calling including domestic, international, E911, directory assistance and toll free dialing.
  • CallerID is passed on all domestic calls and most international calls.
  • Our standard rates are low enough to be considered "wholesale" by many competitive providers. Yet quality, not cost, is our top priority. We only route calls via tier1 global networks via direct routes even when significantly cheaper alternatives may exist. Our view is low cost without reliability is not of value to our clients.


  • Our network is capable of supporting thousands of simultaneous calls. The only practical limit is your available bandwidth for call transport.

SIP Gateways

  • Our primary SIP gateway is located in New York. Due to the quality of our Internet network we are able to provide premium low latency service from this location for clients the throughout U.S.A. and Europe.
  • We also offer California for silver accounts (minimum $500/mo. in billable services).

SIP Affinity VOIP trunks work with all IP PBX systems

  • Compatible with all SIP compliant IP PBX hardware and software.
  • Inbound Calling (SIP Origination) for Local and Toll Free Numbers
  • Outbound Calling (SIP Termination) Worldwide
  • Our highly competitive rates at zero dollar commitment save you money. Send us some or all of your call volume for the same low rate.
  • We provide advanced failover routing to ensure that callers don't hear an error message even if your Internet connection goes down.
  • Worldwide calling at up to 70% less cost. We guarantee premium call quality so you don't have to give up anything for the savings.
  • Our nationwide footprint allows us to issue local telephone numbers in most states throughout the U.S.A.
  • Transfer numbers from your existing carrier without experiencing an interruption in service. We make the process simple.
  • Service is compatible with all commercial IP PBX equipment and open source software (Asterisk, Trixbox, ect..)

Colocation and Hosting

  • You may colocate your equipment in our datacenter or rent server hosting from us
  • Besides reducing latency, a local server eliminates the internet bandwidth charges for calls to/from SIP Affinity VOIP gateways

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