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  • New ways to reduce its fixed network bill



    It is best understood when speaking the same language. That’s the whole point of SIP Trunking: IPBX the company and the network operator using the same signaling protocol SIP (Session Initiation Protocol). Previously, at the exit of the company, it gave way to the Q.931 signaling, ISDN-type, on the public network. With SIP Trunking, there is need translation. Moreover, because of the IP family, SIP runs on the data link; conventional telephone local loop becomes useless. “This development is normal, says Stéphane Picot, Product Manager at BT Global Services. SIP Trunking is an extension on the operator’s network, the enterprise VoIP network. A bit like Ethernet. One was first conquered the local network, the other enterprise telephony and both are extended to the world of telecommunications. ”

    Better continuity between the company and the operator

    Since the mid 2000s, companies increasingly migrate to IP telephony. Especially on the occasion of the renewal of their PBX. The technology is mature, the prices of items dropped and voice-data convergence has become a reality. In internal telephone networks, protocol H323, square and heavy, like most telecom protocols, a time used for voice over IP, fades gradually deal with SIP, resulting from the world of networks, standardized by IETF (Internet Engineering Task Force), better suited for unified communications and new services. One of the attractions of SIP Trunking is to reduce the telecom bill. “It provides a gain of 20 to 40%, due to the disappearance of ISDN subscriptions and packages charged by many operators,” said Bruno Husson, Product Manager at Aastra. Luc Hallion, development director at Mitel, sees other benefits to the SIP Trunking. “For the operator, the company has only one window for voice and data. In addition, the granularity is finer than ISDN, where levels were less modular, because a SIP trunking equivalent to a communication channel. “Some appreciate the greater flexibility of the architecture of the telephone network. “SIP Trunking enables centralization of calls in and out, and the simplification of their routing,” said Fabien MEDAT, pre-sales consultant at Cisco. Therefore, it becomes unnecessary, remote sites, maintain a PABX with its connection to the public ISDN network. IP phones are controlled from the central PBX, through which pass all incoming and outgoing calls via the IP link for communications and SIP Trunking link for signaling

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