Category Archives: VOIP

General VOIP information

VoIP Provider Files Net Neutrality Complaint With FCC

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Albany Water’s assertion that the VoIP voice over IP provider should be paying for access to its fiber-optic network violates the FCC’s net neutrality rules barring broadband network providers from selectively discriminating against Web-based content and service, L2Networks said in a press release. If the FCC allows Albany Water’s attempt to collect payments from L2Networks to move forward, other broadband network operators may be emboldened to seek money from popular Web-based services such as Google, Facebook and Netflix, L2Networks said.

via VoIP Provider Files Net Neutrality Complaint With FCC | PCWorld Business Center.

Yealink

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Founded in 2001, Yealink is the professional designer and manufacturer of IP Phone and IP Video Phone for the world-wide broadband telephony market. For more than ten years, Yealink has focused on VoIP products characterized by high cost-performance, easy deployment and affordable price. Yealink benefits customers from flexibility and broad interoperability with the major IP-PBX, softswitch and IMS in the market. Chosen by famous carriers, enterprises and clients from over 80 countries, Yealink provides SMB and diversified customers from all over the world a best choice to extend the value of network communication.

via Yealink-Easy VoIP,SIP based IP Phone,IP Video Phone,Dect Phone,USB Phone,VoIP,Unified Communication,Skype Phone，Media Phone.

Skype replaces P2P supernodes with Linux boxes hosted by Microsoft (updated)

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The change, which Immunity Security’s Kostya Kortchinsky said occurred about two months ago, represents a major departure from the design that has powered Skype for the past decade. Since its introduction in 2003, the network has consisted of “supernodes” made up of regular users who had sufficient bandwidth, processing power, and other system requirements to qualify. These supernodes then transferred data with other supernodes in a peer-to-peer fashion. At any given time, there were typically a little more than 48,000 clients that operated this way.

via Skype replaces P2P supernodes with Linux boxes hosted by Microsoft (updated).

What’s more, the boxes are running a version of Linux using grsecurity, a collection of patches and configurations designed to make servers more resistant to attacks. In addition to hardening them to hacks, the Microsoft-hosted boxes are able to accommodate significantly more users.

SIPphone

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SIPphone supports open standards aggressively. They sell PSTN calling by the minute, claiming that most flat rate plans are a poor deal for the consumer. SIPPhone has even sued competitors that sell locked ATA devices without proper disclosure to the consumer.

via SIPphone – voip-info.org.

SIPPhone offers three free softphones ( GizmoProject, X-Lite, and PhoneGaim ), and has a free-calling program All Calls Free under which registered users can call the landline and mobile phones of other Gizmo customers for free.

Primus

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Primus Telecommunications Group, Incorporated (PTGi) provides advanced communication services to residential, business and carrier customers around the globe. From traditional voice services to VOIP, and broadband to data center services, we bring sophisticated solutions to residential, small and medium business, enterprise, and multinational business customers all with a focus on integrity, innovation, and the highest level of customer commitment.

Via Primus.

H.323 Mediated Voice over IP: Protocols, Vulnerabilities & Remediation

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Voice over IP (VoIP) can be a complex subject. Network security professionals may find the terminology foreign, and VoIP vulnerabilities are often misunderstood. This paper provides an overview of the H.323 protocol suite, its known vulnerabilities, and then suggests twenty rules for securing an H.323-based network.

via H.323 Mediated Voice over IP: Protocols, Vulnerabilities & Remediation | Symantec Connect Community.

The primary components of an H.323 network include: endpoints, gateways, gatekeepers, and MCUs (Multipoint Control Units). Endpoints (telephones, softphones, IVRs, voicemail, video cameras. etc.) are the devices typically used by end-users in the normal use of the system. Gateways (gateways and controllers) handle signaling and media transport, and typically serve as the interface to other types of networks such as ISDN, PSTN and or other H.323 systems. Gateways which focus primarily on converting between IP and other forms of media (such as PSTN) are termed Media Gateways. Gatekeepers are the logical entity with which endpoints register and are administered. They also manage call setup, teardown, and status and can assist in address resolution. MCUs are designed to support multi-party conferencing.