Is Your Enterprise Network Ready for SIP Trunking?

The move to Voice over IP (VoIP) and Fax over IP (FoIP) in the enterprise has, until relatively recently, been focused on communication within the private enterprise network. Now, some enterprises are using SIP trunks provided by Internet Telephony Service Providers (ITSPs) to connect their internal networks to external, public IP networks. SIP trunking is one of the first steps in an enterprise’s PSTN to VoIP transition, and it enjoys broad availability from service providers in many regions, including many incumbent PSTN service providers.

Migrating to SIP service is not a simple process. In fact, many enterprises need support and guidance as they move from TDM to SIP trunks. Enterprises need a way to connect their existing voice infrastructure to SIP trunks without making major changes to their existing voice or data infrastructures. In addition, to provide the necessary protections for the enterprise, there needs to be a mechanism for implementing Network Address Translation (NAT) and firewall traversal, SIP interoperability, and network edge security; as well as a mechanism for providing a clear demarcation point or boundary for real-time IP communication services at the enterprise edge between the external and internal IP networks.

Supporting SIP Trunking in an Architecture with a TDM or Hybrid PBX

Supporting SIP Trunking in an Architecture with an IP-PBX

SIP Trunk Products

Broadvox has a wide range of VoIP/ SIP Trunking  products to satisfy the needs of any size business, from small to medium size businesses to contact centers, enterprises and carriers. In 2001 Broadvox entered the VoIP market with wholesale products targeting carriers ILECs, CLECs, ASPs, and ISPs. In 2007 Broadvox announced its retail offering, the GO! products. Since then the retail offering has been expanded to include broadband, MPLS, and a hosted PBX suite.  Below you will find a list of SIP Products that offer savings of over 70% traditional TDM services.

A GO!Anywhere SIP Trunk offers unlimited local calling with long distance calling in the continental United States, Hawaii, Puerto Rico, US Virgin Islands and Canada. Referred to as the “Universal SIP Trunk”, GO!Anywhere works with IP PBXs, TDM PBXs or legacy CPE and is certified interoperable with an extensive list of business IP PBXs and Unified Communications solutions. Optional features are available with GO!Xtras add-ons.

GO!Local SIP Trunking includes unlimited local calling at a price point far below traditional TDM POTS lines. Along with the other options available with GO!Xtras, long distance calling can be pre-purchased in discounted minute bundles or customers can pay low per minute rates for calls. 

GO!Domestic is the Broadvox SIP Trunk discounted bundled minutes of long distance product. The long distance bundles cover the continental United States, Hawaii, Puerto Rico, US Virgin Islands and Canada. One toll-free number is included with the purchase of GO!Domestic. A key feature of GO!Domestic is unlimited concurrent call sessions (CCS). The number of CCSs is limited only by the available bandwidth or PBX capacity. A GO!Domestic SIP Trunk can be shared across a multiple locations. Product options are described under GO!Xtras.

GO!Xtras product options expand the flexibility of each of the GO! SIP Trunking products listed above. The available options include are an Enhanced DID (EDID); a DID with E911, eXtra Toll-Free numbers (XTF), Local Number Portability (LNP) and Calling Name (CNAM) lookup and delivery service.  Checkout what options are available for your Broadvox SIP Trunks.


GO!Broadband is designed to support the connectivity requirements for any size business and is available nationwide. Connectivity includes DSL, T1, Bonded T1s, Ethernet over Copper, Ethernet over Bonded SDSL and DS3. However, with Broadvox, companies can use their existing broadband with the purchase of GO! SIP Trunking products. The existing service must meet Broadvox’s QoS standards required to support VoIP. If customers wish to upgrade their broadband or change broadband providers, Broadvox will customize a solution to meet their needs.