Voice Design Engineer role for designing and servicing voice communication systems across the UK rail network. Support the integration of IP-based voice services and modernization of existing platforms.
Responsibilities
Provide skilled IP Network & IP Voice, Telecommunications knowledge enabling:
Design of green field IP networks and modifications to existing IP & SDH networks
Design of Voice over IP Networks for Voice Concentrator renewals
Provide input to the required Migration Strategies
On-premises Cisco Unified Communications Manager (CUCM) to Cisco UCM Cloud
Legacy telephone systems to IP Voice solutions
Demonstrate security competence to implement suitably secure access controls such as Zero Trust (ZTNA)
Modification of live voice network configurations in line with change management
Create implementation plans for site works and integration testing
Create cutover plans for transition into live environments
Provide handover documentation to management centres
Update of Network Rail Telecoms design platforms
Act as mentor to junior team members on technical matters.
Evaluate emerging technologies and their suitability for Network Rail
Deliverables include:
Produce high-level and detailed designs in accordance with the Rail Engineering Plan
Perform reviews to verify designs are compliant to contract technical requirements
Design and support migration strategies from on‑premise CUCM to cloud-hosted Cisco calling solutions
Act as a 3rd line technical lead to resolve technical problems
Take the lead where required in root cause analysis to drive issue resolution and limit impact to the customer.
Creation of design packs in accordance with Network Rail design rules
Produce Bill of Materials associated with designs to support implementation phases
To be responsible for documentation and upkeep of technical databases
Report against programme to relevant Project Manager
Attend and present at technical design review (TDR) and Inter Disciplinary Check (IDC) meetings as required
Requirements
5 years’ experience designing and building IP Voice solutions, ideally to include:
Cisco Call Manager
CUCM Cloud
IP Trade TSS, TPO and Turrets
RedBox IP Voice Recorders
Acculab Voice Gateways
Experience working on Network Rail FTN / FTNx or equivalent carrier‑grade telecoms networks.
Familiarity with rail telecoms assurance and governance processes.
Project Experience: Proven track record of managing high-user-count migrations within a Cisco Collaboration Flex Plan framework.
Modern Networking: Understanding of software-defined networking (SD-WAN) and hypervisor management (ESXi or Cisco NFVIS) for virtualized voice applications preferred.
Benefits
26 days annual leave, plus public holidays, plus the option to buy up to 10 days or sell six days each year.
Company pension scheme
A range of family friendly policies
Occupational health support and wellbeing Portal
Discounts on Cinema, Restaurants and Shopping with Telent Reward scheme.
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