SIP Trunking: Features

SIP trunking applies the latest in VoIP telecommunications to maximize the effectiveness of your business’s strategy for clear, uninterrupted multimedia transmission.

Freewire Broadband makes your business’s voice, video, data, and mobile communication work together to create trusted reliable and flexible business communication solutions that deliver dramatic leaps in productivity and profitability. Contact one of our knowledgeable SIP Trunking experts to see how you can improve how your business communicates.

SIP Trunk is Switched - Incoming calls from the SIP trunk to the IP-PBX is switched to other devices sitting behind the interfacing CPE proxy device.

Switched Access - A SIP trunk offers the IP-PBX switched access to a diverse set off PSTN and or on-net IP termination points via Freewire’s network side of the SIP trunk.

Proxy at CPE - The SIP trunk connects with a SIP device at the customer premise that is a proxy device, with one or more user agents logically attached to it.

Multiple ENUM Termination - Freewire is able to route calls with any variant of DID or 800 numbers to a specific client on the SIP trunk; i.e. the SIP trunk is not be limited to a single 800 or DID number as it is a switched service that the CPE Proxy will finally route in its domain.

Bandwidth QoS Management - In conjunction with the proxy/soft switch and the edgemark controller, bandwidth is managed such that any shared bulk traffic from the enterprise is throttled back, giving the VoIP media traffic priority, and in so doing attains a QoS for VoIP traffic over that SIP trunk.

Cause Code Management - In the event that usable bandwidth on the SIP trunk is exhausted, either Freewire or the edgemark device must be able to determine that the event exists.

Firewall Traversal - A border controller/firewall is provisioned that allows scalability via manipulation at the level 5 layer (SIP layer). This allows calls to traverse and pass through the enterprise firewall seamlessly, and with no security issues (as is the case with STUN or manual pinhole techniques).

Security - Both on the Freewire Broadband side, and the enterprise SUA at the CPE side, must provide the necessary security to ensure that unauthorized users cannot gain access to SIP call facilities interworking between the enterprise and Freewire Broadband. This could include:

  1. IP authentication between the CPESU and Freewire Broadband proxy
  2. Registration and authentication
  3. IPSEC tunnels

Geographic Location Independence - Traditional voice is attached to a physical location, but the flexibility of SIP VoIP allows call routing to any IP address worldwide, including home offices and soft phones.

Cost Efficiency - SIP Trunks are far more cost effective than traditional time-dimension multiplexing (TDM) circuits. A typical small business could easily save 50% or much more on their monthly communications bill.

Pure IP connection - A SIP trunk establishes a pure IP connection. This is important for several reasons:

  1. The VoIP trunk can handle multi-media (voice, data, video and mobile).
  2. The circuit-switched hand-off to the public switch telephone network (PSTN) is not needed – lowering costs by requiring:
    1. Fewer hardware interfaces
    2. Fewer PSTN circuits
    3. Fewer hardware interfaces to maintain
  3. Direct SIP trunking to IP private branch exchanges (PBXs) and soft switches means no additional hardware to achieve end-to-end VoIP.
  4. Direct Inward Dialing (DID) numbers can be provided from virtually any location in North America and a large number of other countries. This permits enterprises to establish a "virtual" presence with incoming calls ringing at a centralized facility.

Our SIP Trunks Include

Next Page - SIP Trunking Benefits: CLICK HERE