The Best SIP Specialists For Hire In Pakistan

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$40 hourly
- 5.0/5
- (63 jobs)
I am Microsft Certified System Engineer and have working experience in Networking / Systems and Cloud IP Phone Systems. *PBXware from Bicom System *Vital PBX *3CX Phone System *Ring Central *Phone System Installations and Configurations (3CX, Avaya IP Manager, Vital PBX, Genesys Cloud, Alcatel, Cisco, Asterisk Server, etc.) * Remote Support For MS Windows, MS Server, Phone systems configurations * Windows Server 2008,2012,2016,2019 Full Support * All Kind Of Software Installation * Bicom PBXware, Multi Tenant, Call Center & Business Editions along with Serverware * Server Backups * Basic Troubleshooting for all OEMs mentioned above * Best Customer Services Guranteed

SIP
PBX
Session Initiation Protocol
Microsoft Windows
Technical Support
Grandstream
VoIP
Linux
Phone Communication
Twilio
3CX
VoIP Software
Microsoft Teams
VoIP Administration
CallTools Call Center Software
Call Center Management
$35 hourly
- 4.9/5
- (7 jobs)
I am a software Engineer with professional expertise in VoIP. I have demonstrated history of working in the financial service industry. I have extensive experience in Voice over IP (VoIP), Asterisk, ARI, SIP, SQL, JavaScript, IBM STT, and Google Dialog flow. Any work given will be done professionally with no miscommitment. Let's hit the road to success together.

SIP
VoIP Administration
Asterisk
VoIP
Session Initiation Protocol
SQL
VoIP Software
JavaScript
$15 hourly
- 4.9/5
- (33 jobs)
Greetings, Are you in need of VOIP PBX setup and IP calls, SMS, and call center features for your business? I am Junaid, a certified Asterisk, a 3cx certified (beginner to advanced) Engineer. My job responsibilities include Installation and configuration of IP PBX on cloud platforms such as Vultr, AWS (Lightsail, ec2), Digitalocean, Azure, and on-site installation on local machines or virtual machines. I am an Asterisk certified, 3cx advanced certified engineer, FreePBX, and FusionPBX expert. My Graduation is in Telecom and have seven years of experience in IT, VOIP, and Server Administration. Skills (VOIP) - Install, Configure, and set VOIP Pbx on Linux and Windows operating systems. - Configure custom domain and DNS setup with SSL configuration or Let's encrypt. - PBX Configuration includes extensions creation, Ring Groupes, IVR (Digital Receptionist) Call Queues, Time Conditions, Inbound and Outbound routes setup, and Voicemail. - SIP Trunk configuration for external inbound and outbound calls. The SIP setting also includes the network configuration and port (SIP 5060) setup. - Network and Firewall setup for smooth call routing on UDP and TCP protocols. - IP Phones ( Yealink, Fanvil, or Grandstream phones) and softphones (Xlite, Microsip, 3cx, Zoiper) configurations and provisioning with the PBX server. - Integration of third-party software like open source CRM (Vtiger, Zoho, Oddo), Billing software (ASTPP, A2billing). - Voice codecs and Transcoding setup. - Call flow app designing. - Troubleshoot the errors and issues in configuring the PBX. - Provide ongoing support and troubleshoot the issues on remote Anydesk or Zoom. Linux and IT Skills I am a certified RHEL administrator working on web server installation and configuration on Apache and Nginx, file system, installation, ownership, and permission, partitions, Archive compression tools and Rsync, Fdisk partitioning cases, Process and daemons, and performance monitoring. My job responsibilities as Linux admin include: - Installing VOIP PBX servers or Application servers on Apache and Nginx. - Configure Nginx as a Reverse proxy server. -Taking Backup of the Pbx and restoring on the new server. - Cron job scheduling in Linux for monthly and weekly backup, auto-renewal, and auto-recording deletion - Basic and advanced file system management and swap files. - Cisco certified network administrator, having work experience on Cisco switches, routers, and bridges. - Basic skills include Windows servers 2012, 2016, and desktop Windows 10, 8, and 7. - DNS and IP aliasing. - RPM Install, upgrade, and erase packages in Linux. - Performance monitoring using tools like Top, find, and FSH. - Database Administration. VOIP Servers use mainly Mysql, MariaDB, and Postgresql. Services - AWS Cloud Computing. Managing ec2 and Lightsail instances. - Aws S3 bucket configuration. Integrate S3 with external application servers. - ServerClient model NFS server - VSFTP Services - Samba Server - DNS server - Mail Server - Proxy server

SIP
Apache HTTP Server
CRM Software
Vtiger
NGINX
Asterisk
Red Hat Administration
Linux System Administration
FreePBX
LDAP
Session Initiation Protocol
3CX
System Security
Virtualization
System Administration
VoIP
$15 hourly
- 5.0/5
- (7 jobs)
Reman Ali is VOIP and IT Professional with more than 5 year+ of in-depth knowledge & expertise in leading Cisco, Asterisk VoIP, Freeswitch, Vicidial and FreePBX. Vast experienced in the support and development of VOIP & telecommunications projects. Excellence communication skills with highest level of customer support. Diverse expertise on operating systems (Linux & Windows) and multiple CRMs.

SIP
Session Initiation Protocol
VoIP Software
3CX
Asterisk
GSM
VoIP Administration
VICIDIAL
API Integration
FreePBX
Business Process Outsourcing IT Services
Call Center Management
CentOS
VoIP
$20 hourly
- 4.7/5
- (83 jobs)
digium certified asterisk administrator.Working on asterisk nearly 10 years and developed. 1. voip billing application with asterisk and freeradius 2. call center application with gotutoidal,vicidial 3. work all on freepbx interfaces like elastix,trixbox,PBX in a Flash and AsteriskNow. 4. Develop voice chat applicatio. 5. confiugure pri's of ata,windstream,and cbeyond proiders and pakistan telecome also. 6. work also on Asterisk Digium cards with fxo and fxs channels. 7. A2billing application with customize new features. 8. IVR solution 9. can work on Perl and PHP AGI's 10. Linux system Administrator 12. MCITP certified 12. PHP web developer

SIP
Trans Continental Technologies Predictive Dialer
A2Billing
Session Initiation Protocol
Linux System Administration
Asterisk
FreePBX
Call Center Management
VICIDIAL
Elastix
$17 hourly
- 5.0/5
- (31 jobs)
I can work on asterisk,voipswitch,vpn,gsm gateways , linux, php, mysql.

SIP
WebRTC
MySQL
Asterisk
VPN
Session Initiation Protocol
VICIDIAL
VoIP Administration
FreeSWITCH
A2Billing
cPanel
FreePBX
Linux
$35 hourly
- 5.0/5
- (4 jobs)
WHY HAROON? Software Engineer with keen interest in algorithmic efficiency, competitive coding and problem solving. Proven analytic and problem solving skills, while outperforming expectations in a fast paced challenging environment. Ability to prioritize effectively, multi-task and achieve objectives. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝘄𝗶𝘁𝗵: 🔹 C/C++11, 14, 17 🔹 C#, Go, Python, NodeJS 🔹 SQL Server, PostgreSQL, MySQL 🔹 Mongo DB, Redis, Firebase 🔹 Angular, Vue.js 🔹 SIP, RTP/SRTP, WebRTC, TCP/IP, UDP, IPC/RPC 🔹 Valgrind, GDB, Wireshark, Vim, Visual Studio, Eclipse 🔹 Linux, Windows 🔹 Distributed Systems, API Design, Network Programming

SIP
API Development
.NET Stack
DevOps
NoSQL Database
Golang
SQL
VoIP
Distributed Computing
Session Initiation Protocol
WebRTC
Docker
JavaScript
C#
Python
C
C++
$15 hourly
- 5.0/5
- (3 jobs)
My Expertise is in iOS App development I can develop App from scratch using Apple Guidelines. My primary language for development is Swift and I have worked with every type of project like, Google Maps MapKit Push Notifications APIs Integration VOIP Calling PJSIP I can develop custom base solution as per requirement.

SIP
Apple Xcode
Smartphone
Business with 1-9 Employees
iOS
Session Initiation Protocol
Swift
VoIP
iOS Development
Google Places API
Mobile UI Design
Mobile App Development
GitHub
Google Maps API
$22 hourly
- 5.0/5
- (4 jobs)
deployed webrtc solution with opensips delployed mid registrar solution with opensips deployed tls endpoints registration with opensips deployed loadbalancer solution with opensips deployed SBC with opensips

SIP
OpenSIPS
MariaDB
FreePBX
Zimbra Administration
Kamailio
Cisco Certified Network Professional
Cisco CallManager
Session Initiation Protocol
VICIDIAL
VMware Administration
Linux System Administration
VoIP Administration
Asterisk
CentOS
$30 hourly
- 0.0/5
- (1 job)
As a VoIP engineer with 5 years of experience, I have gained expertise in designing, deploying, and maintaining VoIP systems for small to medium-sized businesses. I am familiar with VoIP protocols such as SIP, RTP, and RTCP and have worked with various VoIP technologies, including IP phones, softphones, gateways, and PBX systems. In my role, I have also handled troubleshooting and resolving VoIP-related issues, such as call quality, connectivity, and integration with other business tools. I have experience in configuring VoIP systems to ensure optimal performance and security, including implementing firewalls, access controls, and encryption. Furthermore, I keep up-to-date with the latest VoIP trends and technologies and am continuously learning to improve my skills and knowledge in the field.

SIP
FreePBX
Network Administration
VoIP Administration
Computer Assembly
Session Initiation Protocol
Computing & Networking
Routing
Desktop Support
VoIP Software
PBX
Asterisk
Grandstream
VoIP PBX
VoIP
$15 hourly
- 5.0/5
- (9 jobs)
Web development Portfolio: Well, we create websites with Professional design, front-end, back-end, and application architecture. Additional skills: development of design, logos, corporate identity, brand books, printing, editing, photography, color correction, and retouching. front-end middle/senior skills: HTML/css+preprocessors and frameworks (bootstrap, tailwind, foundation, bulma, materialize etc). Javascript: vuejs, jquery, native js. front-end skills: angular, react, ember, backbone. Back-end middle/senior skills: mySQL, postgreSQL. PHP (+ Laravel), CMS (ModX revolution, wordpress). Full stack Developers: We have full stack developers working with us and have a whole team to manage the project by myself. OOP and System Design ✓ Theoretical knowledge and practical experience with design patterns ✓ Asynchronous and multithreading development. ✓ Rest API design, architecture, and implementation ✓ 3rd party API integration using existing packages or from scratch ✓ GIT (Azure, Github, bitbucket), and TFS version control systems. Also, I have a reach experience with C# and everything related to server-side rendering in ASP.NET and ASP.NET Core. Asp. Net(MVC), Web APIs, Twilio, DOT NET Framework, LINQ, Angular Entity Framework, AngularJS, Bootstrap, HTML, CSS, jQuery, Asp.NET Core Framework.

SIP
Web Development
Ecommerce Website
System Configuration
Session Initiation Protocol
Elementor
.NET Framework
Node.js
MongoDB
WordPress
VoIP Administration
.NET Core
Facebook Advertising
VICIDIAL
Technical Support
$15 hourly
- 5.0/5
- (8 jobs)
Over seven years of experience in designing complex telephony Systems using Asterisk, OpenSIPS and FreeSWITCH. - Implementation of OpenSIPS/Asterisk/Radius based telephony systems. - Implementation of various contact center solutions. - Google's Speech Recognition: text2voice and voice2text - vTigerCRM and Asterisk integration for callpopups. - Predictive dialer and progressive dialer. - Configuration of various TDM Gateways. - iOS/Android push messaging integration with OpenSIPS. - Realtime Rate web service for SIP Clients. Key Skills. Asterisk, OpenSIPS, FreeSWITCH, Kannel, FreePBX, Elastix, Genbend SIP Server, FreeRadius, Openfire XMPP. Perl, Python, PHP, Symfony

SIP
VICIDIAL
FreeSWITCH
OpenSIPS
Asterisk
Session Initiation Protocol
Python
MySQL
Perl
$55 hourly
- 4.1/5
- (56 jobs)
I have 18+ years expereince in VoIP/SMS setups using IVRs, asterisk , Freeswitch, MS Teams and Opensips/Kamailio and VoIP | Freeswitch | Opensips | Contact Centers| Conversational AI| Amazon Connect|MS Teams

SIP
Session Initiation Protocol
CentOS
Linux
FreeSWITCH
Customer Relationship Management
A2Billing
Asterisk
MySQL
WebRTC
Android
$20 hourly
- 5.0/5
- (4 jobs)
Hi!!! This is M. Nouman Afzal. I am a VoIP Engineer and have 3+ years of experience working on asterisk and asterisk-based PBX systems. I provide the following services 1. Installation of VitalPBX, FreePBX, vicidial, and 3cx in the cloud or local server. 2. Troubleshooting Issues related to the PBX system 3. Remote Technical Support 4. custom Dialplans and automation 5. Following Features' Setup • Extension Creation • Voice Mail • Announcements • Office Hours setup • Custom IVR with database queries & API calls • Ring Groups • SIP Trunk Integration • WebRTC • Queues • All other related services to the PBX system

SIP
Asterisk
3CX
VoIP Software
VICIDIAL
MySQL
FreePBX
Session Initiation Protocol
Linux System Administration
CentOS
Ubuntu
VoIP
Linux
$30 hourly
- 5.0/5
- (3 jobs)
I have 13+ years of professional experience in java development J2SE, J2EE, J2ME and Enterprise Application Development. Also had experience in Salesforce, Oracle Billing and Revenue Management (BRM) development and integration with existing enterprise applications. Successfully convert 8 monolithic web application portals into Spring Boot Rest API microservices architecture. My core competencies are Software architect, Java development/Debugging, Lowlevel prtocol implementation, Spring boot rest service, hibernatem, JPA, MySQL, Oracle, ERD, Robotic process automation RPA, ICR/OCR, Stock trading robot development. SSO, JIRA, CI/CD, Jboss, Apache Tomcat, Wildfly 13, JSF2.0 and richfaces 4.1, Salesforce, MEGACO/h.248 protocol, Asterisk Server, Bitbucket git, Jira, pipline, hipchat and Confluence, Scrum/Agile development methodologies,Mysql workbench 5.0, IBM Automation Anywhere, Oracle BRM I had done my Software Engineering in 2010 and complete EMBA in 2016. Very dedicated to my professional work, Responsible and committed to deliver. My goal is to make every client satsified and get maximum benfits from my 12 years of profeexperience.

SIP
Jakarta Server Faces
PHP
Session Initiation Protocol
Asterisk
J2EE
Java
MySQL
$15 hourly
- 0.0/5
- (1 job)
As a skilled VoIP (Voice over Internet Protocol) Engineer, I possess a strong foundation in designing, implementing, and maintaining VoIP systems and solutions. With a deep understanding of networking protocols, voice codecs, and telecommunication technologies, I am well-equipped to optimize voice communication over IP networks. My expertise lies in ensuring high-quality, reliable, and secure voice services for businesses and individuals. Key Skills: VoIP Technologies: Proficient in various VoIP protocols and standards such as SIP (Session Initiation Protocol), RTP (Real-Time Transport Protocol), and H.323, with a comprehensive grasp of how these technologies interact within complex network environments. VoIP System Design: Experienced in architecting VoIP solutions, including call routing, SIP trunking, PBX integration, and multi-site deployments, while adhering to best practices for scalability, redundancy, and disaster recovery. Network Infrastructure: Skilled in configuring and optimizing network elements for VoIP, including routers, switches, firewalls, and Quality of Service (QoS) mechanisms, to ensure consistent voice quality and minimal latency. Codecs and Compression: Proficient in various voice codecs (G.711, G.729, Opus, etc.) and their trade-offs between bandwidth consumption and voice quality, as well as expertise in implementing compression algorithms. VoIP Security: Knowledgeable about VoIP security risks and mitigation strategies, including encryption, authentication, and intrusion detection, to safeguard communication channels against threats. Troubleshooting and Support: Adept at diagnosing and resolving VoIP-related issues, conducting network analysis, packet captures, and collaborating with cross-functional teams to maintain seamless communication. VoIP Monitoring and Performance: Skilled in implementing monitoring tools and solutions to proactively track call quality, network performance, and service availability, ensuring optimal user experience. Cloud VoIP Services: Familiarity with cloud-based VoIP solutions. Documentation: Proficient in creating comprehensive technical documentation, including network diagrams, configuration guides, and troubleshooting procedures, to ensure knowledge sharing and smooth system maintenance. Professional Communication: Effective communication skills for collaborating with clients, stakeholders, and team members to gather requirements, provide updates, and offer technical advice. With a proven track record of successfully implementing VoIP solutions across diverse industries, I am committed to delivering high-quality voice communication experiences while adhering to industry standards and best practices. My goal is to contribute my expertise to projects on Upwork and provide efficient VoIP engineering solutions tailored to each client's specific needs.

SIP
Microsoft Server
VoIP PBX
Call Center Management
Network Administration
Microsoft Excel
Cisco Certified Network Associate
Elastix
Session Initiation Protocol
Linux System Administration
VoIP Administration
Asterisk
Presentations
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