Openser asterisk load balancerроботи

Доброго часу доби! Необхідно налаштувати asterisk push notification для "пробудження" iphone перед дзвінком Щось на кшталт цього:

Налаштування ERP ODOO під роботу call-center з модулями і роботою ASTERISK API комутатор Система багатоканальної обробки замовлень

...задач повинна бути обмежена, необхідні дані зберігатись в базі даних) 4) Авторизація клієнта (з використанням https (+бали)) ---------------------------------------- Найважливіша частина завдання --------------------------------------------- 5) Веб застосування повинне забезпечувати т.з. балансування навантаження як мінімум для 2-ох серверів. (для цього повинен бути застосований так званий load balancer, в його ролі може виступати і сам веб сервер, а задачі виконуватись на кількох серверах застосувань (application server)).

...enp4s0 та vmbr1 (локальна мережа ). В результаті повинно бути: 1) дві віртуальні машини використовували власну IP (для вихідного та вхідного трафіку). Це веб-сервери, на яких розміщуються сайти; 2) інші віртуальні машини використовували спільну IP адресу з сервером pfSense для вихідного. Для вхідного трафіку відбувалося прокидання лише окремих портів на ці машини (приміром на сервер з Asterisk прокидаються порти 5060, 5061, 10000-20000 і т.д.) 3) всі віртуальні машини мають перебувають у спільній локальній мережі pfSense (з можливістю обмеження трафіку між окремими машинами); 4) основна IP адреса сервера Hetzner використовувалася лише для доступу до Proxmox

Що потрібно… «Розвернути» на сервері ASTERISK Налаштувати транк sip gsm +transfer Запис розмов та фіксацію номерів трансферних Адмін панель Панель доступу user Надаштування GSM шлюзів

...with SPI communication Ensure the following: • The data should be written every one second. If writing the string takes more than one second, this should be indicated by an error flag. • The used PIO should get the address of the string in an init() function during initialization. • Core0 should not be used except during initialization. Core1 should not be used at all. The PIO should independently load the data of the string from memory every 1 second, transfer it into the SPI TX FIFO buffer, and write it to the SD card. • During intialization, create two files on the SD card; a data file and an error file. • In normal mode, the data should be written to the data file. • In error mode (indicated by error flag), the data should be written to the erro...

I'm in need of a talented freelancer to help optimize the speed of my WooCommerce online store. Specifically, I'm looking to enhance the loading time of the homepage, which is currently performing well, but can be further improved. Key Requirements: - Expertise in optimizing WooCommerce sites, particularly focusing on improving page loading speed. - Proven experience in speeding up homepage load times without compromising the design or functionality of the site.

Show your most impressive work. We already have a Figma designed, but needs profe...browsing experience for professional users. Here's what I'm looking for: - Designing simple, intuitive navigation to help users find what they need effortlessly. - Incorporating interactive elements to make the site more engaging and responsive. - Ensuring fast load times to reduce bounce rates and improve retention. I expect potential bidders to demonstrate sound expertise in UI/UX design, a choice of evidence based methods, and possibly relevant experience working on professional or B2B websites. Knowledge of principles of web load times optimization is a plus. Through this project, we intend to markedly improve the user's experience and satisfaction. We will need NDA signe...

I'm seeking an experienced SEO specialist to optimize my website, which is currently beyond the 2nd page of Google rankings. I aim to improve the site's visibility and generate more traffic. Key tasks include: - Enhancing website load speed - Producing and integrating more relevant content - Optimizing design for mobile use The ideal candidate will have proven experience in SEO optimization and a portfolio of previously optimized websites. Currently, my website receives less than 1,000 visitors monthly, and I'm looking to significantly improve this figure. I value clear, frequent communication and reports on progress made. Your expertise and recommendations are welcome.

...Page Loading: Enhancement of my blog's speed and loading times is crucial, so make sure the new theme improves page loading. Help to identify sources of site going down and/or delays and implement fixes for long-term stability and run time improvement. -Assistance with light design elements (likely less than 10 minor items) Ideal freelancers are also required to have prior experience in website load speed optimization. Knowledge and practice in SEO optimization. Ability to design fun travel blog (not corporate feeling). Strong preference for freelancers in the United States. Please submit your proposal with cost estimate for this project. I am on a very tight budget for this and hopeful to have it completed within a few days. Must be patient enough to work with a non-te...

...top of that DB will live Elastisearch, which will require a near real-time and bulletproof syncing between the two. The server budget expenses is 5-10k$ which should be enough to sustain such a setup. You will have to: Comment and detail what you think about our current thought-out infra strategy (see attached) Make large scale testing by generating hundreds of millions of fake elements Perform load tests on the infra you built Build a primary API to perform deep searches All of that in the cloud on AWS - noting that if ElasticSearch is for example not available, we can use OpenSearch or other. What matters is the final results, and to try to stick as much as possible with the proposed diagram. PLEASE: send over your thoughts about the diagram, as well as previous experienc...

...utilities like laundry and storage. First Floor: - Master bedroom with an en-suite bathroom and ample natural light. - Additional bedroom(s) for family members or guests, each with access to natural light. - Consider incorporating balconies or terraces for outdoor relaxation. 3. Structural Plan: - Ensure the structural integrity of both standalone and semi-detached configurations. - Design load-bearing elements such as walls, columns, and beams to support the building's weight. 4. Mechanical and Electrical Plan: - Layout ventilation and/or air conditioning systems for comfort and energy efficiency. - Plan electrical outlets, lighting fixtures, and switches to optimize functionality and aesthetics. 5. Plumbing and Drainage Plan: - Design plumbing systems to ensure effi...

I would like to manage LiteSpeed Web ADC with API since I made a external control panel wrotten in PHP and what I would like to do is to use LiteSpeed Web ADC to manage user registration, user settings, backend IP, SSL certificates, user permissions, domains, etc... with my external panel. I am OK to use cPanel API if it...would like to do is to use LiteSpeed Web ADC to manage user registration, user settings, backend IP, SSL certificates, user permissions, domains, etc... with my external panel. I am OK to use cPanel API if it is not possible to use LiteSpeed Web ADC native API. What I am asking to the freelencer is to set API endpoints for my needs which I said above. REST API are OK. LiteSpeed Web ADC is a Load Balancer. I am not referring to LiteSpeed Web Server which ...

We have a Problem to update our shop. We got in the SSH Terminal the following Error: ! Warning: Failed to load plugins. Message: An exception occurred in the driver: could not find driver !! PHP Fatal error: Class ShopwareCoreMigrationV6_5Migration1694426018AddEntityIndexToStateMachineHistory contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (ShopwareCoreFrameworkMigrationMigrationStep::updateDestructive) in /var/www/vhosts/***-****.de/httpdocs/vendor/shopware/core/Migration/V6_5/ on line 13

...for commercial structures. - Foundation Design: I want the design to give special consideration to the foundation, ensuring it's strong enough to support the building, considering all potential loadings and soil characteristics. - Load-Bearing Walls Design: Due to the commercial nature of this building, I also need an expert who can design load-bearing walls that are solid and reliable. Ideal skills and expertise: As my structural engineer, you should have a solid portfolio in commercial building design. I want someone who understands the importance of load-bearing walls and foundations in a building structure and can incorporate this understanding in their design. A well-rounded knowledge in ultimately delivering safe, stable, and compliant structures is a...

...efficiently handle any unexpected disruptions. - Problem management: helping us to minimize the impact of incidents that cannot be prevented. - Service Catalog: offering a structured and intuitively organized directory of all the IT services we deliver. The new ITSM system is projected to be used by over 100 users, hence the architecture design should be able to effortlessly accommodate this user load, ensuring a smooth, glitch-free experience. Ideal Applicants would have substantial experience in designing scalable, secure, and seamlessly integrable system architectures. A strong background in ITSM systems design, incident management, problem management, and service catalog frameworks would be highly valuable. The key components of a solution architecture design document includ...

I'm searching for an experienced professional to optimize my WordPress site, significantly improving the loading speed, caching, and image compression. It's critical that my homepage, product pages, and blog sections experience these improvements first. I need this done quickly but thoroughly, without compromising the exi...but thoroughly, without compromising the existing functionalities of my website. Ideal candidates are those with proven experience in WordPress optimization and a strong understanding of enhancing site speed and performance. This includes knowledge in plugin utilization, image resizing, and caching techniques. Task completion and success will be assessed based on the noticed improvement in site load times across all specified pages after the optimizatio...

I'm looking to expand the capacity of my shared hosting server, which currently manages to support up to 100,...there's a need to further improve its ability to handle more. My server largely deals with devices on the ground, transmitting continuous data back to the server, and the sheer volume of synced devices can lead to server strain. I require a professional who has: - Expertise in server management and optimization - Proven experience with scaling shared hosting servers - Knowledge related to server load balancing - Proficiency in data flow optimization Your task would include the analysis of the current setup, troubleshooting potential bottlenecks, and implementing successful changes to increase concurrent users. Please have evidence of your past successful serve...

...a country taxes system to comply with local tax regulations. 17. Responsive Mobile Performance: Optimize the website for responsive mobile performance to ensure a seamless user experience across devices. 18. Social Media Integration: Set up and integrate social media accounts for enhanced engagement and visibility. 19. Performance Optimization: Optimize website performance by minimizing page load times and implementing caching mechanisms. 20. RSS Feed Syndication: Set up RSS feed syndication for easy content distribution. 21. Custom 404 Page: Design a custom 404 page to improve user experience when encountering broken links. 22. Ticketing System and Feedback Forms/Surveys: Implement a ticketing system for user support requests and feedback forms/surveys to gather user feedb...

My website is currently experiencing slow loading speeds, taking over 5 seconds to fully load. I am looking for a skilled web developer who can help optimize its speed. Key requirements include: - **Diagnosis and Analysis:** I need a thorough diagnosis and analysis of the current website to identify the factors causing slow loading speeds. This includes an assessment of the server, website code, and any third-party resources. - **Optimization Plan:** Based on the diagnosis, the freelancer should provide a detailed optimization plan. This may involve minimizing server response time, optimizing images, improving code efficiency, and reducing the number of HTTP requests. - **Implementation:** Once the plan is approved, the freelancer should implement the necessary changes in a way ...

I am quickly seeking a skilled professional to create and simulate load on 5 different profiles using AutoCAD 2020. The load simulation should comply with both DIN 1072 and AASHTO H20 standards. Key Requirements: - Design and create DWG files for the five profiles using AutoCAD 2020. - Perform a load simulation on these profiles as per both DIN 1072 and AASHTO H20 standards. - Analyze and explain any observed profile movement, supplementing your explanations with visual depictions. Ideal skills and experience: - Extensive experience in AutoCAD 2020 - Understanding of DIN 1072 and AASHTO H20 load simulation standards - Proficiency in mechanical engineering and structural dynamics - Fluent in report and presentations for clear communication of results I need th...

I'm in need of an experienced ASP.NET Core MVC developer to enhance the performance of our website. - The main goal of this project is to increase website performance. - The top priority for performance improvement is faster page load times. The ideal candidate for this project is someone who is proficient in ASP.NET Core MVC, and has a proven track record of improving website performance, particularly in terms of faster page load times. Experience with database integration would also be a plus. Please include examples of past projects that demonstrate your ability to improve website performance and speed.

...yer?page-id=0%3A1&type=design&node-id=1015-2809&viewport=426%2C-117%2C0.12&t=XR5jSMN77tD45sZx-1&scaling=min-zoom&starting-point-node-id=1%3A3 The key features I require include: - Fast loading - Google page speed check has to be 100% for both desktop and mobile - The page is image heavy, hence has to lazy load images correctly - Menu has drop down images heavy. Accordingly loading should be only on mouse over and not interfere with rest of page load. - First part of the page should load very fast. - Listing of rest of the page should re-fresh on scroll. - Listings are fetched from mysql db on aws server. - User-friendly dropdown menu design - Solid understanding of interactive elements The ideal candidate should have a strong portfolio inv...

Hi I have a project requiring development of a customised webapp with frontend in and backend in node,js + mongo db and Azure devops (infrastructure + load testing + load balancing + networking + autoscaling). QA test would be need to be performed before commmercial launch, both functional and UAT. Kindly go through the attached document specifying our project requirement and other terms. If the project interests you then we can take it forward, and I can share our detailed project requirements etc. Regards, Amit

I have 10 MikroTik routers set up, but unfortunately, 2 of them are currently facing some issues. I nee...currently facing some issues. I need an expert in MikroTik devices to examine these two routers, verify their configurations, and correct any misconfigurations that may be causing the following problems: - No Internet Connectivity - Load Balancing not functioning properly - Packet-mark bandwidth merge issue The routers are set up with an ECMP (Equal Cost Multi-Path) load balancing method. I'll provide direct access to these routers for your convenience during the troubleshooting process. Ideal Freelancer Skills: - MikroTik Certified Expert - Proficient in ECMP load balancing - Experienced in troubleshooting MikroTik routers - Strong understanding of pack...

I am looking for a talented and experienced web developer who is proficient in web optimisation techniques, particularly for accommodating users accessing the site from Mainland ...development - Proficient with handling website optimisation and speed issues related to foreign web access, particularly in Mainland China - Experience with US-hosted websites Project Specifics are: - The website is currently hosted in the United States - Fix accessibility and loading speeds in Mainland China: all pages are slow, but our primary focus is to get 1 specific page (a form submission page) to load - The project needs to be completed ASAP The goal is to ensure that the form submission page loads quickly and efficiently for users in Mainland China. I'm hoping to implement a solution as so...

we want to develop a new WordPress website for an HR provider - 5-7 pages (home, about, services, careers (will have a contact form with job titles as drop-down, send to an email when submitting), a contact page ...WordPress website for an HR provider - 5-7 pages (home, about, services, careers (will have a contact form with job titles as drop-down, send to an email when submitting), a contact page with form & google map) - Basic content & logo will be provided. - Pictures and other images/videos developer to source. - Responsive design - SEO friendly - Elementor PRO ( we will provide the license) - faster page load - optimized - animated - eye-catching design - Security - Mobile Optimized - contact form & other needed plugin configurations. Please share some design i...

...navigation, and ensuring a consistent visual style throughout the site. - **Enhanced User Experience**: The website should be easy to navigate, with intuitive user interfaces and engaging content. It should be designed to cater to the needs and preferences of a wide range of users. - **Speed Optimization**: One of the main issues with the current site is its slow loading time. The upgraded website should load quickly, providing a seamless browsing experience for visitors. Objectives: - **Increase Online Sales**: The redesign should aim to drive more online sales by making the purchasing process more convenient and appealing to users. - **Generate Leads**: The improved website should also be effective in lead generation, capturing visitor information and turning them into potenti...

I'm in need of an expert to design a site plan for a Level 2 EV chargers. Key Requirements: - Analyze existing property blueprints and create ev charger plan with load balancing for 20 chargers. - Ev charger plan must include: Cover Sheet, site plan, electrical site plan, parking layout and details, single line diagram, schedules and Notes and T24 compliance forms. Experience: - Experience in EV charging station design. - Experience in load balancing for multiple chargers

...The project has a high priority and needs to be completed as soon as possible Before 20 May 2024 Basics Summary: The Load shedding Scheduler System is a comprehensive solution designed to address the challenges associated with managing and implementing load shedding in an efficient and organized manner. As electricity supply continues to be a critical issue in Zimbabwe, it is imperative to have a system in place that can effectively manage the limited supply of electricity during periods of high demand or supply constraints. The Load shedding Scheduler System aims to provide utilities, grid operators, and other stakeholders with a powerful tool to schedule and manage load shedding in a way that minimizes disruption to consumers while maintaining grid stabili...

...The project has a high priority and needs to be completed as soon as possible Before 20 May 2024 Basics Summary: The Load shedding Scheduler System is a comprehensive solution designed to address the challenges associated with managing and implementing load shedding in an efficient and organized manner. As electricity supply continues to be a critical issue in Zimbabwe, it is imperative to have a system in place that can effectively manage the limited supply of electricity during periods of high demand or supply constraints. The Load shedding Scheduler System aims to provide utilities, grid operators, and other stakeholders with a powerful tool to schedule and manage load shedding in a way that minimizes disruption to consumers while maintaining grid stabili...

...Ability to bring concepts to life, balancing both functionality and aesthetics The final product should be a clean, sleek, and easy-to-navigate website, reflecting the minimalistic style while providing exceptional user experience. My expectation is for a thorough, detailed-oriented professional who can capture my vision and translate it into a fully functional portfolio site. Things to be done Load an API data into on premise SQL server database Client will do some data calcution The new data will be available in the database and needs to be show in website with some base UI. Project involves show some other API data on the website as well Need not have a lot of experience in UI design but need experience showing data into a page. Website would look like this ---

...Clearly outline the objectives of the STAAD assessment, including the specific analyses to be performed and the outcomes expected. Methodology: Describe the methodology that will be employed during the assessment, including the use of software and any other tools or techniques that will be utilized. Analysis Parameters: Specify the parameters that will be used in the analysis, such as load conditions, material properties, and design codes. Deliverables: Outline the deliverables that will be provided upon completion of the assessment, such as analysis reports, design recommendations, and any necessary documentation. Thank you for considering me for your STAAD assessment needs. We are confident that our expertise and experience will ensure the successful completion of this projec...

DETAILS: Existing Woocommerce website using Dokan Vendor plugin Vendor add product page has save button OK I need to add second button for "Save & Add Another” This new button should save and then load add new product page. Code should be added via snippet or child theme No upfront payment Milestone release upon satisfactory completion

I'm seeking a proficient developer to design an all-inclusive mobile application for both Android and iOS platforms centered around booking and appointment scheduling. Key features: • Calendar Feature: Incorporation of a user-friendly calender for managing and scheduling appo...both iOS and Android platforms. • Excellent UX/UI design skills, making the application easy to navigate. • Robust knowledge in developing appointment booking systems and familiarity with push notifications. • Expertise in ensuring the app's compatibility across different devices and operating systems. The app should be user-friendly, interactive, and reliable. It's essential that response and load times are optimal too. Applicants should provide examples of similar pr...

I'm in need of Joomla experts to analyze my website's performance and user experience. Specifically, I require assistance in identifying and resolving issues related to high traffic volume impacting the site's performance. Key Tasks: - Analyze the website's performance, focusing on factors like slow page load times and high server response times. - Investigate user experience elements to ensure optimal functionality and navigation. - Identify and address issues related to high traffic volume, leading to slow performance. Ideal Skills & Experience: - Proficient in Joomla website management and troubleshooting. - Strong understanding of website performance metrics and user experience. - Experience in handling high traffic websites and resolving associated iss...

I own a business and I'm in need of a sourcing agent who can help me purchase a minimum of one 20ft container load of copper metal scrap from the Democratic Republic of the Congo. This task needs to be completed within a month. • Task: Secure a supplier of copper wire scrap in the Democratic Republic of the Congo • Quantity: Minimum 1 - 20ft container • Timeline: Must be completed within a month The candidate should possess: • Proven experience in sourcing and procurement • Strong negotiation skills • Knowledge of copper scrap market in the Democratic Republic of the Congo • Ability to deliver within the stipulated timeline.

Need to amend to speed up the loading. Page load slow when heavy. Amend on the flow. (3 issues only) Able to follow one by one. Work with ftp and start immediately.

I'm seeking an expert to help me deploy a Kubernetes cluster on my on-premises Linux machines. The selected professional should also assist in setting up the necessary configurations for load balancing. Key Responsibilities: - Deployment of Kubernetes Cluster - Configuration of Load Balancing - Idea on Rancher , Longhorn , TiDB , TiKV, 2 , TiFlash, Ideal Skills & Experience: - Proven experience in deploying Kubernetes clusters - Proficiency in working with Linux operating systems - Prior expertise in setting up and configuring load balancing within a Kubernetes environment - Strong communication skills to explain technical concepts clearly - Ability to troubleshoot and problem-solve in a timely manner

...Database & using APIs at the same time. For the functions that use the database, I want to replace them with the APIs 1- Make code debuggable. 2- Error message appear with no details, need to make the error message has Show More to display the details of the error. 3- Load Codes from APIs instead of loading from JSON file. (1 API) require updating treeview to load on demand 4- Packages Load from APIs instead of loading from DB (2 APIs) 5- SubscribedPackages Call API instead of inserting into a DB (1 API) 6- Schemes Load from APIs instead of loading from DB (1 API) 7- Uploads Call API instead of inserting into a DB (1 API) 8- Users Call API instead of inserting and reading from a DB (5 APIs) you must have C# Blazor experience. Project Code : ...

...structural engineer to assist with the design and planning of a residential building. The main services required are foundation design and structural load analysis. Key Responsibilities: - Collaborate with architects to determine structural requirements for the building. - Develop the design and planning of the foundation. - Perform detailed structural load analysis to ensure the building can withstand various loads. - Provide recommendations on how to enhance the structural integrity of the building. Ideal Skills and Experience: - Proven experience in structural engineering, specifically related to residential buildings. - Proficiency in structural load analysis software. - Strong knowledge of foundation design principles. - Excellent problem-solving skills and...

As the owner of a 14,000 sq. ft retail store, I am seeking a skilled HVAC engineer to design a suitable HVAC...HVAC system installed. The new design should take this into account and either build upon the existing system or offer a better alternative, depending on the conclusions of your assessment. - Skills and Experience: The ideal candidate should have significant experience handling HVAC designs for retail spaces, particularly those operating under variable weather conditions. A deep understanding of load calculations is crucial, as this will directly impact the efficiency and effectiveness of our HVAC system. Knowledge of the latest HVAC technologies and energy-efficient solutions will be highly appreciated. Looking forward to a well-researched, innovative solution for our H...

I'm in need of an experienced PBX / VOIP / SBC engineer who can address several issues with our customers phone systems system. The primary goal of this project is to troubleshoot and maintain current systems. Key Responsibilities: - Troubleshoot ongoing call quality issues - Investigate and resolve call drops - Address any connectivity problems Skills Required: - Extensive experience with Asterisk and other PBX systems - In-depth knowledge of VOIP network architecture - Proven track record in troubleshooting and maintenance Please only apply if you have a strong background in VOIP technologies and are confident in your ability to resolve issues.

I'm seeking an engineer to assist with designing a container package that's specifically geared towards transporting small skate ramps for events. We have a 3D of a portable ramp set up which can be separated in pieces. We have to load these pieces on pallets and make sure they fit into a 20ft container for shipment. Basically we need the skate ramps to fit into the container. We are looking for a engineer who can communicate in fluent English and work with a step or SKP file.

As the owner of a website, I'm currently facing a significant issue relating to slow loading speed that's proving detrimental to my user's experience...that's proving detrimental to my user's experience. I am seeking a skilled and knowledgeable webmaster who can handle: - Troubleshooting: Primarily, I need someone who can effectively identify issues that are causing my website to load slowly. - Speed Optimization: After pinpointing the problems, I need the webmaster to take actionable steps to optimize the speed. My desired target load time is between 2-3 seconds. The perfect freelancer for this project would be one having expertise in website troubleshooting and solid experience in improving website load times. Proficiency in site speed o...

...showing the events where the User can check the events to which is assigned, View Webinair and other multimedia material loaded by the Administrator for all the User - Internal Communication: the Administrator can send mails to all the Users or subsets of Users - Communication via App: the Administrator can send messages via App (to be developed). The App shall be available on IoS and Android. - Load Webinair (video or audio) by the Administrator that shall be available for all the Users - Embed one meeting platform (e.g.: zoom, googlemeet, ) to be used by the Administrator to interface with Users. Call shall be organized only by the Administrators The ideal candidate for this project would have experience in: - WordPress development - App development for iOS and Android - Expe...

Need to amend to speed up the loading. Page load slow when heavy. Amend on the flow. (3 issues only) Able to follow one by one. Work with ftp and start immediately.

...product uploading protocols, especially for products without a UPC code. Specifically, we're dealing with mechanical belts for power transmission - a niche that needs its special knowledge and attention. Expectations: - Understand and navigate Amazon's exception process for items without UPCs - Write comprehensive product descriptions incorporating required technical details including material, load carrying capacity, and dimensions of the mechanical belt Ideal Skills and Experience: - Significant experience in the Amazon marketplace - Background in mechanical or industrial products would be a bonus - High proficiency in the English language for meaningful product descriptions - Attention to detail for technical specifications. I'm looking forward to working w...

I'd like to re-instate a site from a Digital ocean droplet backup. I've tried doing it myself but when I create a new droplet using the backup I can't get the site to load and don't have the technical knowledge to know what's going wrong. Thank you

I'm in need of a SIP and Asterisk expert to help troubleshoot issues with a SIP interconnect between two companies, focusing purely on voice communication. Key responsibilities include: - Identifying issues within the existing setup - Repairing and configuring the SIP and Asterisk system Ideal skills and experience include: - Proven experience with SIP and Asterisk systems - Strong troubleshooting abilities - Understanding of VoIP technologies - Excellent communication skills