Enterprise SIP Trunking – Complete Guide Part 1

Como hablamos en posts anteriores, desde hace años la telefonía corporativa ha tenido que incorporar nuevas funcionalidades para adaptarse a las necesidades del mercado, por esta razón es que la evolución natural del mundo TDM se dio hacia IP. La vieja y confiable PSTN (Public Switched Telephone Network) con sus líneas analógicas, ISDN BRI, E1 o T1, está por desaparecer. La telefonía se está moviendo de la PSTN a los troncales SIP (Session Initiation Protocol), mucho más modernos y flexibles. Hace unos años todas las comunicaciones se realizaban utilizando conmutadores de circuitos en la red telefónica pública y también dentro de la empresa. Esto dejó de ser eficiente a partir del crecimiento de las redes de datos, la incorporación de dispositivos inteligentes y la necesidad de integrar aplicaciones a la telefonía. Los grandes proveedores de telecomunicaciones están desactivando rápidamente la vieja funcionalidad de la PSTN y están migrando los clientes a IP. Y por lo tanto un troncal SIP y una actualización de la central telefónica serán inevitables en el futuro cercano. In order to use the SIP Trunk service, your company needs an IP telephone exchange (IP PBX). Verizon 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 ya no ofrecerán líneas ISDN. Como resultado la demanda de los servicios de SIP trunks increased by 62% en 2015 respecto al año anterior. Esta guía explica qué son los troncales SIP, sus ventajas y cómo migrar. Calls within the NGN network Los troncales SIP permiten establecer llamadas IP de extremo a extremo, donde las comunicaciones de las empresas pueden ser dinámicas, eficientes y establecerse virtualmente sin problemas. Los troncales SIP son totalmente compatibles con la red PSTN. Se pueden establecer sin problemas llamadas entrantes y salientes con esta red. What are SIP trunks? SIP 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. Benefits of SIP Trunks Making 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: Lower monthly rent for lines and DID The 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). Voice quality Excellent voice quality on calls. Best Customer Service Provide 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. Branches easily connected For 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. Move your offices and keep the same number SIP 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. Eliminate costly gateways and interfaces Los clientes con IP PBX no necesitan contar con Gateways para conectarse a la red PSTN. Todas las llamadas telefónicas vienen por IP. Lo que se traduce en mejor calidad en la comunicación al evitar la conversión extra de audio. El cliente no necesita incorporar interfaces costosas (ej: tarjeta E1). Flexibility Greater 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. Correct number of channels The 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 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. It'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! Easy Maintenance Maintenance is easier compared to conventional telephone systems because the model is simpler. Take advantage of a modern IP PBX Modern 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. To take into account

• SecurityIt is very important that the SIP trunk and IP-PBX have a well-secured network and have an anti-fraud system in place. The anti-fraud system should monitor the system and provide protection against fraudulent calls.
• Own network: Does the SIP trunk provider have their own network or is it a rebrand of a third-party service? There are a few providers reselling SIP trunks from other providers. Select a provider that has control over the service and the network.
• Competitive Costs: Costs can vary widely from service to service. Some providers will charge more for SIP trunks. Shop around for competitive rates, but make sure you're getting business-grade SIP trunk services.
• Number Portability: Can the provider port your phone numbers? Make sure you choose a provider that can port all your existing numbers – not all providers can do this in all regions.

Upgrading your PBX to an IP PBX Lo más probable es que las viejas líneas PSTN estén conectadas a otro antiguo dispositivo, la central telefónica. Este dispositivo es inflexible, difícil de manejar y a menudo caro. Técnicamente es posible comprar un Gateway que permita que la vieja PBX hable con el troncal SIP. Pero por qué no actualizar a una moderna PBX IP y aprovechar la flexibilidad y características modernas que la telefonía IP le puede traer. Hay muchas razones para hacerlo, que van desde el ahorro de costos y aumentos de productividad junto con las funcionalidades a gran escala de Comunicaciones Unificadas que una PBX IP ofrece. Puede elegir entre un PBX hosteado, un servidor dedicado o una máquina virtual donde instalar su PBX. _____________________________________ ¿En busca de advice para contratar un Troncal SIP para su empresa? Hable con un experto. En SimpleTECH podemos ayudarlo, poseemos el conocimiento especializado necesario para que el proceso de cambio se desarrolle con total fluidez y sin problemas, consúltenos. Somos el único Platinum y Support Partner de 3CX de habla hispana en Latinoamérica.   By: The team of SimpleTECH© Montevideo, Uruguay Fuentes: Conocimiento propio de nuestros ingenieros https://www.3cx.es/voip-sip/troncal-sip/