{"id":231,"date":"2018-01-17T15:55:19","date_gmt":"2018-01-17T14:55:19","guid":{"rendered":"https:\/\/blog.simpletech.uy\/?p=231"},"modified":"2025-12-08T19:56:02","modified_gmt":"2025-12-08T18:56:02","slug":"troncal-sip-empresarial-guia-completa","status":"publish","type":"post","link":"https:\/\/www.simpletech.uy\/en\/troncal-sip-empresarial-guia-completa\/","title":{"rendered":"Enterprise SIP Trunking \u2013 Complete Guide Part 1"},"content":{"rendered":"
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\n\t\t\t\t\t\t\t\t\tAs we discussed in previous posts, corporate telephony has had to incorporate new functionalities for years to adapt to market needs. This is why the natural evolution of the TDM world led to IP.\n\nThe old and reliable PSTN (Public Switched Telephone Network) with its analog lines, ISDN BRI, E1 or T1, is about to disappear. Telephony is moving from the PSTN to much more modern and flexible SIP (Session Initiation Protocol) trunks.\n\nA few years ago, all communications were carried out using circuit switches on the public telephone network and also within the company. This ceased to be efficient with the growth of data networks, the incorporation of smart devices, and the need to integrate applications with telephony.\n\nMajor telecommunications providers are rapidly decommissioning old PSTN functionality and migrating customers to IP. Therefore, a SIP trunk and a telephone exchange upgrade will be inevitable in the near future. In order to use the SIP Trunk service, your company needs an IP telephone exchange (IP PBX).<\/strong>\n\nVerizon <\/strong>has stopped offering basic ISDN services to its customers in the United States. In the United Kingdom, ISDN lines have dropped to 3 million from 4.7 million lines in 2007 and the trend is accelerating. For this year, 2017, major telephone operators such as BT, KPN, France Telecom, Deutsche Telecom and Telecom Italia <\/strong>will no longer offer ISDN lines. As a result, the demand for services SIP trunks increased by 62%<\/strong> in 2015 compared to the previous year.\n\nThis guide explains what SIP trunks are, their advantages, and how to migrate.\n\nCalls within the NGN network<\/strong>\n\nSIP trunks enable end-to-end IP calling, where business communications can be dynamic, efficient, and established virtually seamlessly.\n\nSIP trunks are fully compatible with the PSTN network. Incoming and outgoing calls can be established seamlessly with this network.\n\nWhat are SIP trunks?<\/strong>\n\nSIP trunks are telephone lines that operate over IP using the SIP protocol. Using this standard protocol, telecommunication service providers (VoIP) connect one or more channels to the customer's PBX. Telephone numbers and DIDs are linked to the SIP trunk.\n\nBenefits of SIP Trunks<\/strong>\n\nMaking voice calls over IP based on SIP standards for signaling and RTP for media, provides greater communication flexibility for businesses, enabling new multimedia service possibilities and many benefits. SIP trunks will deliver:\n\nLower monthly rent for lines and DID<\/strong>\n\nThe monthly cost of having a number of lines installed in your office is significantly reduced with SIP trunks. Similarly, DIDs cost much less (in most cases).\n\nVoice quality<\/strong>\n\nExcellent voice quality on calls.\n\nBest Customer Service <\/strong>\n\nProvide better service to your customers by adding more geographic and international numbers. Simply adding numbers to your SIP trunk and directing them to your IP PBX will give your customers more options to call you, at a significantly lower cost. Reduce barriers to contact and increase sales.<\/strong>\n\nBranches easily connected<\/strong>\n\nFor customers with multiple branches, it is possible to design a solution where only the central site has a connection to the telephone network and the rest of the branches can take lines from this site.\n\nMove your offices and keep the same number<\/strong>\n\nSIP trunks are not tied to a physical location, so it is very easy to move offices without having to change your stationery or inform your clients of new numbers. You don't need to bother and pay the operator to redirect phone calls.\n\nEliminate costly gateways and interfaces<\/strong>\n\nCustomers with IP PBX do not need Gateways to connect to the PSTN network.\n\nAll phone calls come via IP. This translates to better communication quality by avoiding extra audio conversion.\n\nThe customer does not need to incorporate expensive interfaces (e.g., E1 card).\n\nFlexibility<\/strong>\n\nGreater flexibility in setting the number of simultaneous calls, unlike E1s, which have a fixed number of channels. The number of simultaneous SIP Trunk sessions can be increased without the need for any additional installation at the customer's site or installing another service. Keep in mind that for analogue telephones, a copper pair needs to be installed for each line, and for digital telephony, another E1 needs to be installed.\n\nCorrect number of channels<\/strong>\n\nThe SIP Trunk can be made independent of the access medium by which the customer site is reached. This allows the company to provide the number of voice channels it needs<\/strong> choosing the most suitable access technology for each case. With SIP trunks you can easily choose the right number of channels you need, whereas with ISDN\/T1 you often had to choose to add 15 or 30 lines. This usually means that ends up with expensive, unnecessary extra capacity. <\/strong>\n\nIt's very easy to add more channels to your SIP trunk to handle increased call volumes. A simple phone call will allow you to add channels, and often this can be done instantly. Compare that to having to hire additional lines to be installed in your office, and then having to upgrade your old PBX to handle more lines!\n\nEasy Maintenance<\/strong>\n\nMaintenance is easier compared to conventional telephone systems because the model is simpler.\n\nTake advantage of a modern IP PBX<\/strong>\n\nModern IP PBX \/ Unified Communications Solutions give businesses increased productivity, mobility and better results. Connecting an IP PBX to a SIP trunk is much easier than through the PSTN.\n\nTo take into account<\/strong>\n