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Arsen S. | Elance
 
176985602337900
Last Sign-in: Jul 11, 2014

Arsen S.

VoIP Administration & Development
   Bulgaria
  |   Sofia, Sofia
  |  4:27 pm Local Time

Overview

Minimum Hourly Rate $44

Reliable & Robust VoIP systems. From SOHO to Enterprise. Real timeline - Real price.

Read More »
Dec 1, 2013|System Administration|$1,062|Completed
Jun 16, 2013|System Administration|$289|Completed
|
4.8
May 21, 2013|Other IT & Programming|$10,548|Working
Jul 17, 2012|Software Application|$219|Completed
|
5.0

View All »

Portfolio

Complete billing solution for Telecom. Rating Engine development.
https://www.billstats.com/
Open source solution that allows you to make and receive Skype calls to and from SIP...
http://zaplee.com
High-Availability VoIP platform for encrypted phone calls and text messages. SIP over...
http://safechats.com
Check current calls. Ability to trace of each current call(dtmf used, channel, codec, etc)
Complete CRM solution for Call-Centers: Customers info management, Predictive Dialer,...

Skills (10)

Tested
VoIP
Voice Over IP Test
My Score
avg
Linux
Linux Test
My Score
avg
MySQL Administration
MySQL 5.0 Test
My Score
avg
Unix
Unix Test
My Score
avg
Passed
Network Administration
Networking Concepts Test
My Score
avg
SQL Programming
SQL Skills Test (Hands-on programming skills)
My Score
avg
Passed
PHP5
PHP Programming Skills Test
My Score
avg
openser(opensips)
Freeswitch
freepbx/a2billing

Service Description

Small and well-established international team of developers and Linux/BSD administrators.
We are focused in VoIP field only and we have been working here for more than 8 years.

Area of experiences:

VoIP
-Asterisk PBX: Full proficiency
-FreeSWITCH: Full proficiency
-Yate: Full proficiency
-Strong knowlege of SIP protocol and SIP routers/proxy servers
-OpenSER (Kamailio/OpenSips)
-Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc.
-IVR and Auto Attendant Development
-Secure VoIP: TLS, SRTP, ZRTP

SQL
-MySQL/PostgreSQL - design, maintenance and optimization of databases
-NoSQL: MongoDB

Various Billing solutions and GUI:
-A2Billing: Full proficiency (configuration from scratch, customization)
-CDRTool (prepaid billing/accounting and sip tracing for OpenSIPS using RADIUS)
-CDR-Stats (call detailed statistic/realtime for Asterisk and FreeSWITCH)
-vBilling (billing for FreeSWITCH)
-FreePBX: GUI for Asterisk
-Fusionpbx: GUI for FreeSWITCH

We have successfully completed large amount of commercial installations of VoIP PBX servers.
From SOHO to Enterprise deployment including integration of various VoIP solutions into existing network environment.
We also have experience in building of secure "bastion" VoIP/Linux servers.

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Keywords

asterisk php sql voip a2billing ivr freepbx linux unix openser opensips kamailio freeswitch mysql postgresql billing telecom load balancing softswitch yate software development
Company Snapshot
Elance Level
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  • 12 months
  • Lifetime
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300
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Identity
Username
kapernik
Type
Company
Member Since
October 2009
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Arsen S. | Elance

Arsen S.