VoIP Developers For Hire

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  • AbrahamBUを採用する
    5.4
    レビュー26件 時給 $20 USD(米ドル)
    *Dedicated Freelancer* 9+ Years Robust Experience as a Lead Engineer. Master in 29740dc5d6VoIPea20ec841e Platforms and Integration with other components of OSS/BSS, Telecom Networks and CRM products. CCIE Level ... with Mobile Network Infrastructure as well as OSS/BSS platforms in Carrier WiFi, Carrier 29740dc5d6VoIPea20ec841e and general concept of Mobile Data Offloading. I did also managed to run a massive ISP with +500000 ... customer base and +200000 live users. hands on experience on various 29740dc5d6VoIPea20ec841e/Network tech and devices Ability to train, motivate and supervise a team Kindly please contact me for more details.
    *Dedicated Freelancer* 9+ Years Robust Experience as a Lead Engineer. Master in VoIP Platforms and Integration with other components of OSS/BSS, Telecom Networks and CRM products. CCIE Level Network Knowledge and Robust Telecom Experience. (NOC Manager) Expert in WebRTC and Asterisk along with a deep understanding and experience in Signalling and Media protocols, furthermore in Secure calling and Media encryption. Having 100++ successful setup and integration, I am fully familiar with every single issue or bugs you may face in WebRTC related projects and Asterisk. I am also experienced with Mobile Network Infrastructure as well as OSS/BSS platforms in Carrier WiFi, Carrier VoIP and general concept of Mobile Data Offloading. I did also managed to run a massive ISP with +500000 customer base and +200000 live users. hands on experience on various VoIP/Network tech and devices Ability to train, motivate and supervise a team Kindly please contact me for more details. 減らす
  • APCTelcoを採用する
    4.1
    レビュー8件 時給 $13 USD(米ドル)
    as ACD (Pure Asterisk), VICIdial & FreePBX. - Installation & configuration of VTiger & also integration with VICIDial & FreePBX systems. - Configuration of SIP devices, 29740dc5d6VoIPea20ec841e Trunk, 29740dc5d6VOIPea20ec841e phones/Soft ... phones. - PRI/E1 card installation & Configuration (Sangoma & Digium). - Installation & Configuration of 29740dc5d6VoIPea20ec841e/SIP based gateways (GSM GW, FXO GW, FXS GW). - Installation and Configuration of iSymphony
    Hi. I'm a asterisk consultant with 10+ years of hands on experience in below mentioned applications, servers & interfaces. - Expertise in Installation & configuration of Asterisk applications such as ACD (Pure Asterisk), VICIdial & FreePBX. - Installation & configuration of VTiger & also integration with VICIDial & FreePBX systems. - Configuration of SIP devices, VoIP Trunk, VOIP phones/Soft phones. - PRI/E1 card installation & Configuration (Sangoma & Digium). - Installation & Configuration of VoIP/SIP based gateways (GSM GW, FXO GW, FXS GW). - Installation and Configuration of iSymphony on FreePBX. - FAX Configuration on FreePBX & FAX To Email on FreePBX. - Installation & configuration of Linux OS like CentOS, Ubuntu & OpenSuse. - I also have expertise to do all required configurations on asterisk like IVR (GUI based or dialplan), Agent Page Custom etc. I have worked in Telecom industry for more than 10+ years and in open source & Linux platform. Happy to assist you. 減らす
  • abusayed2004を採用する
    5.7
    レビュー38件 時給 $30 USD(米ドル)
    Work 8 years on server security, cloud, AWS, GCP, OpenStack, 29740dc5d6VoIPea20ec841e, Asterisk, Vtiger CRM, Open VPN, CentOS, Ubuntu, Redhat, 29740dc5d6VoIPSwitchea20ec841e, Oracle DB, RHEVM, OpenStack, Mysql Red hat, PHP scriptwriter ... • Services Optimization • Security Hardening • 29740dc5d6VoIPea20ec841e, Asterisk, SMS, Dongle, FreePBX install configure, maintain • Malware Removal • Infrastructure Planning • Disaster Recovery • Shell Scripting • Capacity
    Work 8 years on server security, cloud, AWS, GCP, OpenStack, VoIP, Asterisk, Vtiger CRM, Open VPN, CentOS, Ubuntu, Redhat, VoIPSwitch, Oracle DB, RHEVM, OpenStack, Mysql Red hat, PHP scriptwriter for IVR and AGI implementation on asterisk, have a good team for support and further development. Puppy Linux customization. • Linux - Hosting Systems Administration & Monitoring • Devops • Services Optimization • Security Hardening • VoIP, Asterisk, SMS, Dongle, FreePBX install configure, maintain • Malware Removal • Infrastructure Planning • Disaster Recovery • Shell Scripting • Capacity planning, application delivery planning • Network Troubleshoot, Spanning Tree, PVST, RSTP, HSRP, RIP, BGP, EGRP IGRP, MPLS • SAN Troubleshoot • glusterfs, ceph • NFS, SMB, ISCSI • Linux performance tuning • MySQL, Oracle DB performance tuning • Laravel web application development • Web Security, Web benchmark, best practice • IPTV, Live streaming, VOD, FFmpeg • Raspberry PI 減らす
  • audigomez21を採用する
    1.4
    レビュー1件 時給 $24 USD(米ドル)
    I have extensive experience in the field, knowledge in 29740dc5d6voipea20ec841e, callcenter systems. experience in the following area : -Asterisk / Elastix / FreePBX / Issabel/Xorcom/GrandstreamUCM - Hosted PBX Solutions. - Asterisk Security. - Call Center Solutions (Vicidial,Goautodial).
    I have extensive experience in the field, knowledge in voip, callcenter systems. experience in the following area : -Asterisk / Elastix / FreePBX / Issabel/Xorcom/GrandstreamUCM - Hosted PBX Solutions. - Asterisk Security. - Call Center Solutions (Vicidial,Goautodial). 減らす
  • amelantoneyを採用する
    4.6
    レビュー23件 時給 $20 USD(米ドル)
    My objective is to bring excellent client satisfaction, providing quality and professional work. I am an IT Engineer with bachelor degree. I'm also an experienced Linux and 29740dc5d6VoIPea20ec841e Server Administrator
    My objective is to bring excellent client satisfaction, providing quality and professional work. I am an IT Engineer with bachelor degree. I'm also an experienced Linux and VoIP Server Administrator, areas of my expertise are: *Asterisk - Freepbx , Elastix , Vicidial , Goautodial , SIP , DAHDI , GSMintegration *Linux - CentOS, RedHat, Debian, Ubuntu, Gentoo (administration, configuration, audit, optimization) *Webhosting Administration (cPanel, Plesk, DirectAdmin) *Virtualization (Onapp,VMWare, VirtualBox, HyperVM, OpenVZ, Xen) *Amazon AWS setup using RightScale.com or Amazon tools *Apache (installation, configuration, optimization) *MySQL (installation, configuration, optimization) *Subversion systems - SVN, Perforce (instalaltion, configuration) *Atlassian JAVA applications - Jira, Confluence, etc. (installing and configuring) *Mail programs (Exim, Postfix, Qmail, dovecot, ssmtp) *System Backup and Restore automatization *System Services Monitoring automatization *Shell Scripting 減らす
  • vw1485208vwを採用する
    0.8
    レビュー1件 時給 $20 USD(米ドル)
    Roku Developer Actualmente me dedico a la adquisición de datos a tiempo real, y su publicacion en portales web, diseño de proyectos de 29740dc5d6VOIPea20ec841e Network & IPTV engineer and Roku Channel Developer IPTV
    Roku Developer Actualmente me dedico a la adquisición de datos a tiempo real, y su publicacion en portales web, diseño de proyectos de VOIP Network & IPTV engineer and Roku Channel Developer IPTV Engineer, fully experienced in full solution from scracth for IPTV and DVB-T, DVB-C, DVB-S/S2 solutions Integracion de Stalker y Xtream-Codes xtream-code con Roku, SceneGraph APP My Skills: -Service Streaming Developer y Diseñador de Sitios Web -Administrador de Servidores dedicados y VPS -Programador en PHP, C, C++, Labview, .NET -Administrador de Redes - Web Service API(PHP/MySQL/JSON/XML/HTML5/Javascript/CSS/) -Wordpress/Joomla/Magento - Analist Traffic Network -Roku Channel developer in Brights, InstantTV or Roku Publish I have great experience with Linux, Server Optimizing, Failover Clustering, Security, Virtualization and etc. I work as Linux Freelancer over 12 years and know all common used utilites, scripts and services such as Apache, PHP, MySQL, Nginx and many others. 減らす
  • esamuelsを採用する
    6.2
    レビュー17件 時給 $75 USD(米ドル)
    I also have more than 14 years experience implementing 29740dc5d6VoIPea20ec841e solutions for ITSPs and start-up 29740dc5d6VoIPea20ec841e Providers. As well as 29740dc5d6VoIPea20ec841e anti-blocking solutions for various countries in the Middle East and in ... the South America region. I also work very closely with the FusionPBX developers and also developed a Carrier Grade Billing Platform for Freeswitch called CGRT Billing. 29740dc5d6VoIPea20ec841e Skills: - - - Asterisk
    I also have more than 14 years experience implementing VoIP solutions for ITSPs and start-up VoIP Providers. As well as VoIP anti-blocking solutions for various countries in the Middle East and in the South America region. I also work very closely with the FusionPBX developers and also developed a Carrier Grade Billing Platform for Freeswitch called CGRT Billing. VoIP Skills: - - - Asterisk, A2Billing - - - FreeSWITCH, FusionPBX - - - Kamailio, OpenSIPS - - - Quintum, Mediatrix, Portech and others Cloud / Virtualization Skills: - - - Amazon, Proxmox, KVM, OpenVZ Firewalls / Router / VPN Skills: - - - Linux IPTables, Fail2ban, pfSense Firewall, - - - DDWRT, Tomato - - - OpenVPN Other Skills: - - - MySQL, PostgreSQL, Redis 減らす
  • poltoを採用する
    3.1
    レビュー1件 時給 $20 USD(米ドル)
    ( mosquitto lib) 29740dc5d6VOIPea20ec841e/SIP ( pjsip lib) Systems : Linux MAC OSX Embedded Linux Create Linux Embedded systems from scratch ( Cross Compiling
    Programming : c c++ Qt4 Qt5 node.js sql Technologies (Libraries): AUDIO ( portaudio lib ) IMAGE PROCESSING ( opencv lib) MQTT ( mosquitto lib) VOIP/SIP ( pjsip lib) Systems : Linux MAC OSX Embedded Linux Create Linux Embedded systems from scratch ( Cross Compiling) hardware Modules : Raspberry PI Arduino XBEE RFID GSM SIM800 SIM900 GPS MODBUS (TCP/IP) (RTU) CANBUS TOUCHSCREEN LORA PHPOC 減らす

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