Senior VOIP Engineer L3

14 مارس، 2023

0 1 2 دقائق

الوصف الوظيفي

Description

The proposed position will be for a member of a managed services technical team, which is responsible for VoIP, functions and services related issues (operations, 2nd and 3rd level support). The engineer will be working in a group of IT experts locally and within multiple projects to cover the required services functionalities and availability.

Roles and Responsibilities

This position will require travelling. When not on site, Engineers will be assisting in the development of project plans, designs and documentation for existing and new scopes.
Plan, deploy, configure, troubleshoot collaboration solutions from the beginning to implementation by collaborating with vendors e.g. Cisco
Establish a working Cisco UC Manager 10.x VOIP system while keeping in mind client requirements
Plan, install, configure, examine and maintain Cisco Call Manager products
Provide on-call operational level support for all facets of Cisco VOIP hardware and software
Deliver proof of concepts for emerging technologies
Assist in capacity planning of VOIP equipment and networks
Provide VOIP architecture and infrastructure designs for data centers and site deployments
Open TAC cases to rectify user, VOIP or collaboration infrastructure problems
Write HLD/LLD for new scopes or tenders
Have extensive knowledge of routing protocols (Static, OSPF, and BGP)
Design and deploy changes to the configurations of clients as per the applicable change management process.
Recommend and develop best practices for new locations
Provide support services for SIP Signalling

المهارات

Role Knowledge Requirements

Proven track record working with leading unified collaboration systems like Cisco, Avaya
Experience with Cisco different collaboration products
Cisco Unified Computing Systems (UCS)
Cisco Analog Voice Gateways
Cisco Voice Routers
Cisco Unified Communications Managers
Cisco Unity Cisco Emergency Responder
Cisco Expressway
Cisco Unified Border Element (CUBE)
Webex
Cisco Prime Collaboration.
Experience evaluating, designing, implementing, and managing collaboration infrastructure
Working knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and Digital Tone Multi Frequency (DTMF)
Knowledge of third party/open source SIP stacks
Familiarity with IPSec implementation and troubleshooting
Hands-on experience with Session Border Controllers and Voice Gateways
Extensive hands-on experience with dial plans, IVRs, SIP, IAX, RTP, SRTP including TLS, DIDs, codecs and other protocols
Solid understanding of traditional telephony, PRIs, BRIs, FXO/FXS, circuit-switching, POTS, PSTN, MTSO
Very good knowledge of protocol and packet analysis
Solid understanding of OSI model, firewalls, IP routing, IP switching, VLANS, and QOS/COS
Hands-on experience with network monitoring, network diagnostics, and network analytics tools
Experienced in virtualization platforms VMWare and Hyper-V
Strong understanding of NAT traversal for VOIP
Strong understanding of H.323, MGCP & ISDN
Connectivity using copper/fiber
Implement QOS in VOIP networks
Effective communication and strong analytical skills
Knowledge of Linux environments e.g. Ubuntu, CentOS and shell/Perl scripting
Expertise in developing IPT/ VOIP applications