Vodafone Global Enterprise (VGE)  provides innovative products and services to enable multi-national organisations to stay agile and competitive

POSITION : VoIP Core Network Specialist 

DESCRITION

• The VoIP Network Specialist will provide overall network design and operations support for a broad range of requirements with a primary focus on Voice over IP (VoIP) -based products and services.
• This employee will support installation, configuration, maintenance and usage of VBN’s core VoIP infrastructure.
• He shall also liaise with VBN’s suppliers and vendors and act as a final point of contact for VoIP related issues in collaboration with Network Operations, engineering and product design as required

Responsibilities

• Validate bespoke solutions generated  by Solutions Architecture and Provisioning teams.
• Implement proof of concepts and derive results from consistent testing methodologies focusing on capabilities of new VoIP products.
• Recommend and justify optimisations, enhancements and upgrades on the core of the VoIP system as may be required.
• Ensure that technical documentation associated with the VOIP core network is updated regularly and is readily accessible whenever required.
• Develop and maintain supporting documentation highlighting best practices for the VoIP system.
• Ensure that the VoIP system is secured and protected from intrusions that could lead to outages or a  severe loss of revenue.
• Adhere to defined Change, Problem and Incident management processes.
• Build, upgrade, integration, optimize and  operate the core of the VoIP platform for  VBN
• ‘Own’ the  VBN VoIP core infrastructure (C4 & C5 Voip switches, Session border controllers, billing platform, transcoders, Media servers, etc) and ensure consistent up-time  and performance of the infrastructure
• Improve on ‘uptime’ on infrastructure by ensuring adequate backup on devices for components of the VoIP core.
• Carry out third -level troubleshooting on escalated VoIP issues including compatibility, performance and quality of service for customers when required.
• Lead the installation, testing, troubleshooting, monitoring and support different VoIP equipment in VBN lab and production network.
• Ensure integrity of billing on the VOIP platform – with interconnect partners as well as clients.
• Design and implement  disaster recovery process and procedures for Voice network
• Generate reports to assist in review, analysis and evaluation of deployed solutions and in the design of new technology solutions.
• Work closely with other VBN departments / units on projects related to the design, development, deployment, monitoring and evaluation of new products and services -

Requirements

• Bachelor's degree in Electrical and Electronic Engineering  or related discipline
• 5 - 7  years or more relevant work and ‘Hands-On’ experience in solutions designs with  IP-PBX, Unified Communications platforms, SBCs OCS, and Call Center Applications.
• An understanding of IP and internetworking (LAN & WAN) technologies is mandatory for this role.
• Very strong knowledge of Softswitch class 4 and Softswitch class 5.
• A CCVP certification - or highter is a strong advantage
• Knowledge and understanding of information security principles and practices.
• Understanding of networking protocols TCPIP, SMTP, FTP, HTTP, SNMP, Syslog, SSH etc.
• Advanced understanding of the implementation of SS7 and SIP signalling protocols.
• Functional experience with general database implementation, including, setup and running database scripts.
• Prior VoIP technology implementation and support experience with Enterprise type accounts.

Skills:

• Excellent written and verbal communication skills.
• Excellent presentation and facilitation skills.
• Ability to communicate complex technologies to a broad audience in a concise, clear and simple manner.
• Excellent organizational skills.
• Excellent interpersonal skills.
• Strong Leadership skills.
• An ability  and flexibility to work independently, with minimal supervision, meet tight deadlines and to build up good team relations.
• Strong time management, problem solving, prioritization and planning skills.
• Ability to work in a dynamic and demanding environment.