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$30 USD / hour
$30 USD / hour
It's currently 10:28 AM here
Joined August 25, 2011
19 Recommendations

Eremin P.


5.0 (78 reviews)
$30 USD / hour
$30 USD / hour
Jobs Completed
On Budget
On Time
Repeat Hire Rate

Voip developer

Hello, my friends! There are what i have done in this 2019-2021 year. 2021: ☑ Softswitch 4 class based on opensips 3.2 (LCR, Transcoding, Cluster mode) ☑ Opensips - MS TEAMS integration ☑ Bootstrap 4 web interface for opensips projects, ☑ Whole Media Sending system. System that can send Millions of Faxes\Audio with reports, 2020: ☑ Ready autodialer based on Issabel in 1 hour with forms and reports. ☑ Ansible script for deploy drachtio and simple JS app ☑ Email2Fax gateway ☑ Webrtc client with web frontend based on SIPJS. ☑ Customize Asterisk for License checking. Written on C inside source files. 2019: ☑ Webrtc2sip server with Encrypted RTP ☑ Callback + AMD based on FreePBX ☑ click2call php script for Asterisk based PBXs ☑ deploy opensips server (with web panel) with 200cps\6000 concurrent calls ☑ deploy zabbix monitoring system for voip servers ☑ Increase disk space on VM without power off ☑ Moving VMs between ESXI hosts ☑ Colored fax on Hylafax+ ☑ Raspberry Bluetooth Asterisk voip\gsm gateway, ☑ Voip Push Notification iOS, Android ☑ Bluetooth-Asterisk-GSM Gateway, ☑ SIP Load-Balancers Between, ☑ TLS SIP Implementation, ☑ Freepbx Survey module, ☑ Whitelist Kamailio sip server for millions numbers in db, ☑ AGI -> PAMI scripts convert to make server more faster for wholesale, I am voip developer who loves his job. Be free to ask me any question.
Freelancer VoIP Developers Russian Federation

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Portfolio Items

I have developed webrtc phone with webrtc2sip server, so it's easy to get and start to use it.
WEBRTC phone with Webrtc2SIP server
Opensips can be used for simple proxy for 2 PBXs to make failover decision and other staff.
Opensips as Failover proxy for many PBXs
Now i am using beauterful graphs from Grafana when we monitoring our voip system.
Beautiful Graphs with Grafana
I already done SIP to GSM gateway based on Asterisk-bluetooth-GSM logic.
Bluetooth and Asterisk
I already done with making sip proxy that support PUSH notification.
Actually it may be installed on any opensips\kamailio\asterisk servers.
PUSH notification iOS
Install opensips with one of scenario:
Installing Opensips


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Showing 1 - 5 out of 50+ reviews
Filter reviews by: 5.0
€30.00 EUR
All fine, thank you.
Linux Software Architecture VoIP SIP
Flag of Marc K. @MrVoIP2
7 months ago
$30.00 USD
Professional and patient. He worked with me until the job was done. He answered all my questions and explained everything to my satisfaction. AAAA+++++++++++++++++++++++
System Admin Linux Asterisk PBX Cisco VoIP
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Flag of Eric G. @OneVoiceCr
9 months ago
$1,000.00 USD
this was a great experience
Linux VoIP FreeSwitch
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Flag of Chris R. @chrisrawlings
9 months ago
$200.00 USD
He is very talented and successful. I definitely recommend it.
Asterisk PBX
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Flag of Levent K. @leventkaramanli
10 months ago
£476.50 GBP
Excellent and patient freelancer will use again soon.
PHP Linux Software Architecture Asterisk PBX VoIP
Flag of Ian P. @prabactel2012
11 months ago


DID numbers \ Django \ Python \ VOIP solutions

Dec 2013 - Present
We able to make all over solution for telecom based on opensource code. CDRTool, Opensips, Kamailio, Web, Django.


Jan 2013 - Dec 2013 (11 months, 1 day)
Head of voice department. We making Virtual PBX based on Opensips \ Asterisk


Feb 2003 - Dec 2012 (9 years, 10 months)



Uralskij Gosudarstvennyj Tehniceskij Universitet, Russian Federation 2001 - 2007
(6 years)



Opensips Blog (
In this article i explain about what can be used by any front-end developer for making web-interfaces for voip core.

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Top Skills

VoIP 86 Asterisk PBX 81 Linux 59 PHP 28 Node.js 19

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