Minimum 3 to 6 years of experience in VOIP Domain (WHOLESALE VOICE ONLY).
Good knowledge of SIP & H.323 Protocol, Call Flow, Cause Codes, VOIP Codecs.
Knowledge/HANDS ON EXPERIENCE of Session Initiation Protocol (SIP), H.323, SDP, RTP, RTCP, TCAP & SS7 protocol suit.
Experience on at least 2 SBC's like Sansay, Nextone, Sonus, VOS, Portaone, Veraz, Acme Packet etc.
Master in troubleshooting VOIP Issues, Proficient with tools like Wireshark.
Hands on knowledge on Nextone/ Sansay / Other SBC's (Provisioning/Troubleshooting/ Supporting etc.)
Responsible to execute and provision interconnection of Supplier of Voip routes and Customers
Responsible to test the quality of the route, provide QOS report
Proficient in producing technical documentation related to change control processes and root cause assessment.
Understanding of wholesale telecom billing will be an added advantage
To provide resolution of issues & maintain high quality standards of support
End-to-End ownership of resolution of issue raised by the customer.
Troubleshooting and resolution of customer issues raised - proactive / reactive.
Knowledge of any network monitoring tool (like Zenoss) and troubleshooting network alerts.
Monitor and maintain space usage, connectivity problems on both Linux and Windows servers.
Knowledge of Linux and Windows Operating systems.
Database experience (MySql/SQL Server).
Experience with any ticketing management systems.
Experience in working on Asterisk VOIP PBX preferred. Past programming experience is a plus.
Strong knowledge of Excel and MS Access.
Excellent written and verbal communication skills. Must be able to support International customers and interface with executive management.
Follow-up with various teams external and internal.
Computer Engineering or Telecom Graduate with 3 to 6 years of experience in Operations Center/ Network Operations Center environment/Network Infrastructure Support
- Experience in Nextone & Sonus and other switches - Manage and review vendor support issues - Generate reports and review with stakeholders - Hands on experience of Cisco MGWs/MGX & PGW2200 - TDM (SS7) working experience - Strong knowledge/understanding of internet protocols and standards (e.g. IP, TCP, UDP, HTTP, DNS, SNMP) - IP routing - configuration & troubleshooting - Understand route tables, CDR, and technical VOIP route terms - Asterisk VOIP PBX experience and Past Programming experience a plus. - Routing protocols BGP, OSPF, EIGRP - End to end LAN management and diagnostics - Experience in working in 24/7 support environment - Ability to multi-task, tasks prioritization - Ability to work independently with minimal supervision - CCNP certification will be a plus - Able to interpret and correlate alarms and symptoms to determine actual issue. - Able to follow written procedures. - Exceptional attention to detail. - Knowledge of programming languages such as Python, or Perl are a plus.