Multiregional TransitTelecom, OJSC
Senior engineer
Troubleshooting accidents and problems with network operators. Inter-operator interaction.
Experience in diagnosing and troubleshooting various types of networks: SDH, PDH, MPLS, VPN L2, L3
Understanding of telephony protocols SS7, EDSS, VoIP (SIP, H323, SIP-T), H 248.
Analysis of traces, search for incorrect exchanges in accordance with the recommendations of the RFC, ITU.
Experience with wireshark, tcpdump.
Elimination of accidents and malfunctions on different equipment (accidents, problems with incorrect signal exchange, one-way / poor hearing, short-term drop in signal lines, accidents on streams, DTMF, missed calls).
Configuration change on Softx3000, AX 810, EWSD, SBC for network routing.
Alarm monitoring via Zabbix, Nagios.
Work in CRM-systems: Naumen, Remedy, Microsoft Dynamics
Experience with technology: Juniper MX480, MX240; Huawei S9306; Huawei NE40, NE20; Cisco PIX, ASA, 2950, 2651; Ericsson AX 810; Huawei SoftX 3000; AudioCodes Mediant 3000; Sangoma NetBorder; UMG 8900; SBC Acme 4500, 6300 package; MUX Siemens Surpass Hit 7070, 7050; ECI DTX 600; ECI XDM 1000; Optera Meter 4200; Siemens EWSD; Eltex.