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System Adminstrator(VoIP)
System Adminstrator(VoIP)

System Adminstrator(VoIP) at Telebu Communications · Hyderabad · 3 - 5 years · ₹5L - ₹6L / yr · Bootstrapped · Posted 24 Nov 2025

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System Adminstrator(VoIP)

Soumya Kalaga's profile picture
Posted by Soumya Kalaga
3 - 5 yrs
₹5L - ₹6L / yr
Hyderabad
Skills
FreeSWITCH

Job Title: System Administrator (VoIP/Telephony) / Telephony Engineer (Telecommunications)

Company: Telebu Communications

Location: Hitech city, Madhapur, Hyderabad

Experience: 3–5 Years

Employment Type: Full Time

Salary: Up to CTC 50,000


About Telebu Communications

Telebu is a 20+ year-old product-based technology company offering enterprise communication solutions across SMS, Chat, Voice & Video platforms. Formerly known as SMSCountry Networks, Telebu has offices across India, Bahrain, UAE, Saudi Arabia, Qatar & USA.


Objective: We are looking for a  System Administrator (VoIP) / Telephony Engineer (Telecommunications) to join our Telebu's Communications engineering Team. The Telebu will develop, implement and support IP Telephony related technologies including and not limited to IP Telephony, IVR platforms, Conferencing solutions, Voice engineering integration, Voice over IP (VoIP), Session Border Controllers (SBC), Session Initiation Protocol (SIP), WebRTC, and Public Switched Telephone Network (PSTN) gateways.


Responsibilities:

  • Install & maintain Freeswtich and other SIP servers.
  • Administration of SIP and Media Servers, Network/Protocol level debugging and testing, Contact center solutions, Troubleshoots and resolves complex problems.
  • Provide IP Telephony and VoIP Subject Matter Expertise for Company and Company's managed service providers, manages 3rd party telecom carriers and providers.

Requirements:

  • 3 years of hands-on industry experience in telecommunications
  • Strong conceptualize knowledge and experience with telephony protocols like SIP, SDP, RTP, SRTP and audio/video codecs.
  • In-depth working experience with Kamailio, Freeswitch, Any of the SIP stack (Sofia, reSIProcate, PJSIP, etc.), and Linux
  • Experience in using the VoIP testing tools like Wireshark, VoIPMonitor, SIPp, SIPCapture, Homer etc.
  • Strong understanding of implementing various network setups (Private VPNs, multi-zone secure connectivity etc)

Nice to have:

  • Experience with virtualization/container related technologies (Xen, VMware vSphere / ESXi, Docker, Kubernetes)
  • Hands on writing production quality code using any of the scripting languages like Python, Go, Erlang etc.
  • Working knowledge in any NoSQL databases like MongoDB, Redis, Cassandra etc.
  • Passionate about knowing everything about VoIP Protocol standards & related RFCs
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About Telebu Communications

Founded :
2003
Type :
Product
Size :
20-100
Stage :
Bootstrapped

About

Telebu is a global enterprise communication solutions provider that offers SMS, Chat, Voice, Audio, Video & Conferencing solutions, along with an integrated platform for APIs and SDKs. The company operates in public, private and government sectors, helping people reimagine enterprise communication. Telebu's products include TelebuText, grptalk, TelebuHub, and TelebuJoin. Telebu was founded with the aim of driving enterprise communication using innovative technological solutions. The company has a global footprint in about 15 countries, including India, UAE, Oman and Hong Kong. TelebuText is a market leader in bulk SMS & Voice broadcasting, while grptalk is an audio-conferencing app that can connect 3-1000+ people in <30 seconds. TelebuHub is a single-window contact center software that serves as the "Hub" for all customer communication, and TelebuJoin is a video-conferencing application that can turn any space into a virtual conference room. Telebu solves the problem of inefficient and outdated communication systems in enterprises by providing a range of communication solutions that are easy to use, reliable, and cost-effective. The company operates in various industries, including healthcare, education, finance, and retail, among others.
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Company social profiles

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