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SIP Trunks

SIP Trunks

Wondering how SIP Trunking works? SIP stands for Session Initiation Protocol and represents the use of VoIP to allow the connection of a PBX to the Internet.

The Internet basically replaces the traditional telephone line, allowing a user to communicate with telephone subscribers that use fixed or mobile telephone service. AstraQom uses the SIP Trunk lines to deliver the communications initiated from your PBX to the outside networks, as well as the incoming communications to your PBX.

We can offer significant cost savings for enterprises, eliminating the need for local PSTN gateways, costly ISDN BRIs (Basic Rate Interfaces) or PRIs (Primary Rate Interfaces) especially for businesses who have invested in building an internal IT infrastructure struggling between migrating to new solutions and renouncing some of the advanced features by keeping their systems in place.

As SIP Trunk providers, we are able to enhance the capabilities of your software or device by providing a complete solution for all internal and external communications. Whether you have a traditional PBX or Virtual PBX, a calling card service or a call center solution, we can help you make the most of your IP investment with a SIP Trunk, which is a combined solution of DID Numbers and bi-directional channels scaled perfectly for your needs.

Contact us today to talk to a SIP Trunking Advisor

Contact a SIP Service Advisor1-866-202-0100

Cost-Effective SIP Trunks Provider

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Complete SIP Trunk

Online Reporting, Billing and Account Management tools.

High Quality SIP Service

We provide multi-language, high quality customer care.

SIP Trunk design

Multi-node national and international network redundancy.

Best SIP Trunk providers USA

US-based company and part of an international telephone group.

SIP Service

Dialer Support.

SIP Trunks Benefits

Unlimited Free Inbound calls.

SIP Trunking quality of service

Reliable, uninterrupted level of service.

Guaranteed SIP Service

Uptime of 99.98% guaranteed through SLA.

VoIP SIP Lines

Great for both a single office and multiple locations.

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1 DID included

Outbound Rate: $0.02/minute

Additional DID - $2.00/month

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SIP Trunks USA

North America


1 DID included

1000 minutes US & Canada included

Additional Outbound Rate: $0.02/minute

Additional DID - $2.00/month

Order Now


1 DID included

Unlimited calling to US & Canada included

Additional DID - $2.00/month

Order Now

* All prices are exclusive of taxes



1 DID included

1000 minutes US & Canada

Additional Outbound Rate: $0.02/minute

Additional DID - $2.00/month

Order Now
How SIP Trunking works

Why you need a
SIP Service

SIP lines are vital to connect the users of your PBX or Unified Communications solution to public telephone networks.

A SIP Trunk represents the service that supports your internal infrastructure and offers the necessary channels (phone lines) and DID Numbers (phone numbers) for your business to dial out and be reached.

Probably the most important aspect of deploying a VoIP SIP Trunk is the channel and DID distribution. SIP Trunking services offer the possibility of combining these 2 elements according to your business needs, making it the most versatile and scalable solution available on the market.

You can activate any DID Number with any number of channels to build your ideal VoIP SIP.

VoIP SIP Features and Capabilities

How many SIP Trunks do I need

Aggregated SIP trunk
Our aggregated trunking capability enables you to allocate a number of channels that will be distributed dynamically wherever there is a need for capacity, eliminating the need for dedicated trunks. For example, if you have 5 DID Numbers and 10 channels, if 3 calls are coming to one of your numbers, 3 of your channels will be allocated to allow the connection to that number, leaving other 7 channels available for further incoming or outgoing calls on your other numbers.

SIP Trunk maximum channels

Bi-directional SIP Trunk
AstraQom offers both IP to PSTN connectivity and connects to any type of compatible PBX or Unified Communications solution.

SIP Ttrunks unlimited long distance

Call Termination
The service includes unlimited free incoming calls and offers national and international termination using the AstraQom network.

SIP Trunk protocols

Protocols and Codecs
AstraQom's SIP Trunks support SIP and H.323 protocols, T.38 and G.711 codecs.

Caller ID features SIP Service

Caller ID features
Supported VoIP Trunk features include CLID (calling line identification), DNIS (Dialed Number Identification Service) and CNAM (Calling Name Delivery).

SIP Trunks for Call Centers

Dialer support
Call Centers with automated dialing systems benefit from a SIP Trunk designed for their specific needs.

Compatible VoIP SIP

Virtual Phone Numbers
The SIP Trunk service is compatible with all US and International numbers available.

SIP Service Availability

SIP Provider USA Global SIP Service
2British Columbia
4New Brunswick
5Newfoundland and Labrador
6Nova Scotia
8Prince Edward Island
Local SIP Provider
Global SIP Trunks Architecture

Click on the state to see in which cities our SIP phone service is available:

  • Alabama
  • Arizona
  • Arkansas
  • California
  • Colorado
  • Connecticut
  • Delaware
  • Florida
  • Georgia
  • Idaho
  • Illinois
  • Indiana
  • Iowa
  • Kansas
  • Kentucky
  • Louisiana
  • Maine
  • Maryland
  • Massachusetts
  • Michigan
  • Minnesota
  • Mississippi
  • Missouri
  • Montana
  • Nebraska
  • Nevada
  • New Jersey
  • New Mexico
  • New York
  • North Carolina
  • North Dakota
  • Ohio
  • Oklahoma
  • Oregon
  • Pennsylvania
  • Rhode Island
  • South Carolina
  • South Dakota
  • Tennessee
  • Texas
  • Utah
  • Vermont
  • Virginia
  • Washington
  • West Virginia
  • Wisconsin
  • Wyoming

See the countries where our SIP lines are available:

  • Argentina
  • Australia
  • Austria
  • Bahrain
  • Belgium
  • Brazil
  • Bulgaria
  • Canada
  • Chile
  • China
  • Colombia
  • Croatia
  • Cyprus
  • Czech Republic
  • Denmark
  • Dominican Republic
  • El Salvador
  • Estonia
  • Finland
  • France
  • Georgia
  • Germany
  • Greece
  • Hong Kong
  • Hungary
  • Ireland
  • Israel
  • Italy
  • Japan
  • Latvia
  • Lithuania
  • Luxembourg
  • Malaysia
  • Malta
  • Mexico
  • Netherlands
  • New Zealand
  • Norway
  • Panama
  • Peru
  • Poland
  • Portugal
  • Puerto Rico
  • Romania
  • Singapore
  • Slovakia
  • South Africa
  • South Korea
  • Spain
  • Sweden
  • Switzerland
  • Turkey
  • United Kingdom
  • United States
SIP Tunking Providers
Benefits of SIP Trunking

With its advanced features and capabilities, the SIP Trunking service allows your business to make the most of its telecommunications infrastructure, integrating US and International numbers with voice, fax, auto-dialing softwares, and enhanced voicemail platforms in one efficient solution, while eliminating the need and costs of high maintenance connections.

Create your own custom SIP lines by combining any type and number of DID Numbers with any number of channels.

Decrease communication and IT costs by up to 50%.

Maximize the return on your IP infrastructure investment.

Facilitate intra-office communication while integrating other locations seamlessly.

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