Trouvez votre prochaine offre d’emploi ou de mission freelance Session Initiation Protocol (SIP)

Au sein d'un acteur majeur de son secteur, vous intervenez en tant qu'Expert Web Conferencing afin d'assurer le bon fonctionnement et l'évolution des infrastructures de téléphonie et de visioconférence. Vos principales responsabilités sont les suivantes : Assurer la résolution des incidents de niveau 2 liés à la téléphonie et à la visioconférence. Réaliser le diagnostic et le dépannage des matériels et applications associés. Traiter les escalades clients et coordonner les actions correctives. Participer aux projets d'évolution et de transformation des environnements Téléphonie et Visioconférence. Accompagner les équipes d'exploitation sur des sujets techniques ponctuels. Garantir la cohérence, la stabilité et la disponibilité des infrastructures de communication. Assurer le management d'une équipe locale ainsi que le partage des connaissances techniques. Piloter les escalades vers les fournisseurs et équipes de niveau 3 lorsque nécessaire. L'environnement technique comprend notamment : Cisco Meeting Server (CMS) Cisco Expressway B2B et Mobile & Remote Access (MRA) Terminaux Cisco Room, SX, Personal, EQ, Webex et Board Series Room Navigators, Barco, écrans et périphériques de salle Cisco Unified Communications Manager (CUCM) Unity Connection Jabber Cisco SBS TelePresence Room Protocoles SIP et H323 VMware Gestion des licences, certificats et mécanismes de sécurité Codecs vidéo et algorithmes de chiffrement

Au sein d'un acteur majeur de son secteur, vous intervenez en tant qu'Expert Web Conferencing afin d'assurer le bon fonctionnement et l'évolution des infrastructures de téléphonie et de visioconférence. Vos principales responsabilités sont les suivantes : Assurer la résolution des incidents de niveau 2 liés à la téléphonie et à la visioconférence. Réaliser le diagnostic et le dépannage des matériels et applications associés. Traiter les escalades clients et coordonner les actions correctives. Participer aux projets d'évolution et de transformation des environnements Téléphonie et Visioconférence. Accompagner les équipes d'exploitation sur des sujets techniques ponctuels. Garantir la cohérence, la stabilité et la disponibilité des infrastructures de communication. Assurer le management d'une équipe locale ainsi que le partage des connaissances techniques. Piloter les escalades vers les fournisseurs et équipes de niveau 3 lorsque nécessaire. L'environnement technique comprend notamment : Cisco Meeting Server (CMS) Cisco Expressway B2B et Mobile & Remote Access (MRA) Terminaux Cisco Room, SX, Personal, EQ, Webex et Board Series Room Navigators, Barco, écrans et périphériques de salle Cisco Unified Communications Manager (CUCM) Unity Connection Jabber Cisco SBS TelePresence Room Protocoles SIP et H323 VMware Gestion des licences, certificats et mécanismes de sécurité Codecs vidéo et algorithmes de chiffrement

This role has a significant impact on shaping the Mobile RAN Strategy Rate: inside IR35 Location: London or Bristol 3 days onsite 2 wfh Duration: 6 months Expert knowledge of KPI design, Network performance management. Capability to build KPI that is aligned & reflective of user experience. Expert in KPI and User experience improvement. Expert knowledge of Ericsson and Nokia counters, KPIs. Expert level hands-on experience in 5G and 5G+ investigations, parameter optimisations and E2E Investigations. Expert understanding of E2E 4G,5G, VoNR, SA, NSA, Slicing architectures and design. Expert understanding of Nokia and Ericsson vendor In depth knowledge of Mobile networks particularly 4G/5G & Public Safety functionality over LTE/5G+ with particularly deep understanding of network design, performance, and optimisation. In depth knowledge of 5G,5G+, LTE & SIP signalling, PTT (push to talk), SRTP/DTLS troubleshooting & Optimisation. Good understanding of 3GPP & ETSI specifications. Good understanding of DTLS/SRTP protocol. MANDATORY: Extensive experience in mobile telecommunications industry in the role of a performance SME with business-critical, high-availability / high-throughput systems and networks. Able to provide technical solutions, processes definition for network performance & optimisation of 4G based RAN Macro network. Proven experience in defining and understanding KPI definitions, formula and measurements of radio networks. Able to analyse in depth, drive test logs, Wireshark traces and protocol analysers traces for 4G networks. Good Knowledge of LTE parameters & timers. Familiarity with test software & devices (Nemo/TEMs/Accuver) & post processing tools (Actix). Experience of working with 3rd parties' network/IT Suppliers. Please send latest CV LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

About the Job 3rd Line Cisco Support Analyst We require a 3rd Level Cisco Support Analyst for our Client based in Gloucester. You must have at least 2 to 3 years experience of supporting applications on a Cisco platform at 3rd line support level. Full understanding of the architectural and engineering design and integration process of communications solutions. Ability to multi-task, prioritizing multiple objectives and initiatives. Strong client service oriented and ability to interact with clients, staff, and management teams. Good verbal and written business communication skills. Ability to work independently, with a high degree of initiative, and within a collaborative team environment. Strong organizational and time management skills The ability to install and maintain complex solutions in an ever evolving market place, to problem solve in a logical manner in order to rectify customer issues efficiently. The responsibilities include developing the network design in conjunction with Product Management. To implement the network design in chosen locations. Work with Product Management to design the support processes and communicate these out to the support teams within Nine. To support partners in the implementation and support of their own customer installations including some out of hours on call duty. To monitor and maintain the hosted infrastructure and respond to and resolve any faults that may arise using diagnostic tools and vendor support. Must have the following skills: Cisco, Microsoft, Linux and other relevant certifications Server administration including Windows and Linux Knowledge of voice prioritization including QoS and VLANS Proficient in the operation and management of routers and switches (qualified to CCNA or equivalent) In-depth expertise in VoIP protocols (SIP, RTP, TFTP and related Protocols) and delivery and support of voice applications using these technologies Knowledge of IP based technologies, with an understanding of LAN/WAN methodologies and topologies as a minimum. Strong working knowledge of data communications including: TCP/UDP/IP, routing, tunneling, Please forward your CV to -hidden email- in Word format, along with your salary expectations.

Job Title: Comms Specialist Engineer Location: Bridgend or St Asaph (Post to Bridgend) Salary: £30,000 to £35,000 per annum (depending on experience) Job Type: Full-time, Permanent Why join Flotek? Flotek Group is one of the fastest-growing technology companies in the UK, helping small and medium-sized businesses with IT, cyber security and communications technology. You will join our "Purple Army", a collaborative and fast-paced team that values expertise, trust, recognition and delivering a genuine "Wow" for our partners. Every employee shares ownership of the group, so you are genuinely invested in our success. The role: You will be a key point of contact on our comms helpdesk, providing high-quality remote support across VoIP, connectivity and data networking. You will resolve issues efficiently, escalate with clear diagnostics where needed, and make sure both our internal teams and partner environments get outstanding service. This is a full-time, office-based role and you can be based at either our Pencoed office in Bridgend, South Wales, or our St Asaph office in North Wales - whichever suits you best. You must be able to commute reliably to one of these offices. We cannot offer sponsorship or relocation assistance, so you must already have the right to work in the UK. What you will be doing: Incident management: Be the first point of contact for telecoms incidents, logging, categorising and prioritising faults in line with ITIL best practice. Service level management: Resolve tickets within agreed SLAs with timely responses, accurate updates and clear documentation. Ownership and escalation: Own incidents end to end, aim for First Contact Resolution, and escalate to Comms Specialists or carriers with clear diagnostics. Technical troubleshooting: Diagnose VoIP systems, SIP trunks, handsets, routers, broadband circuits (FTTC, FTTP, SoGEA) and internal network connectivity. Supplier coordination: Liaise with broadband carriers and hosted voice providers to progress faults and drive timely resolution. Service monitoring: Spot and respond to outages, call quality issues, latency and performance concerns before they escalate. Continual improvement: Document known issues, workarounds and fixes in the Knowledge Base to speed up future resolution. Service communication: Give clear, confident updates to customers and stakeholders, managing expectations during incidents. On-call support: Support telecoms services during scheduled weekend and out-of-hours cover, following major incident escalation paths. What we are looking for: Essential Requirements: You will be a logical problem-solver with a customer-first mindset who thrives in a busy helpdesk environment. 1 to 2 years' experience in a VoIP or communications support role. A good understanding of SIP, RTP, NAT and VoIP fundamentals. Basic knowledge of routing, switching, VLANs and firewall concepts. Strong problem-solving skills and the ability to diagnose issues logically. Excellent communication skills and a genuine customer-first approach. The ability to work effectively in a fast-paced helpdesk environment. A desire to grow your skills and progress into more advanced comms engineering roles. Useful, but not essential: Exposure to hosted VoIP platforms such as Gamma, Horizon, CallSwitch or Yealink handsets. Awareness of Microsoft Teams Phone, Operator Connect and Teams Calling Plans. Experience with DrayTek, UniFi, Aruba or SonicWall networking solutions. Experience using a ticketing system such as HaloPSA. Relevant certifications such as CompTIA Network+ or vendor-specific VoIP and networking qualifications. Technologies you will work with: Voice & Telephony Hosted VoIP: FloCX (Gamma/Cisco), FloOne, Floline+ Microsoft Teams Phone and Operator Connect SIP trunking (Gamma and Voicehost) Yealink handsets and desk phone estates Call routing, IVR, call queues and voicemail FloAnywhere and mobile solutions Connectivity & Networking SoGEA, FTTC, FTTP and leased lines DrayTek, UniFi and Aruba networking SonicWall firewalls and VLAN configuration Carrier and broadband fault management HaloPSA ticketing and service records Monitoring tools for call quality and latency Working pattern: Monday to Friday, working 8 hours per day between 08:00 and 18:00. A 30-minute lunch break each day. Weekend on-call support on a shared rotation. Office-based at either Pencoed (Bridgend) or St Asaph. What you will get: Inclusive EMI Share Equity Scheme - own a slice of the "Purple Pie". Birthday day off. An additional day off for personal life milestones. A Give Back Day to support a charity of your choice. Perkbox discounts across shopping, gyms, restaurants and more. Regular social events and team-building opportunities. Career growth pathways into senior communications or network engineering. Due to the nature of the role the company will not be able to offer sponsorship or relocation assistance so candidates must already reside in the UK. Please click the APPLY button to submit your CV for this role. Candidates with the experience or relevant job titles of; Telecoms / VoIP Support Engineer, Telecoms Engineer, Telecoms Support Technician, IT & Telecoms Helpdesk Engineer, Telecoms Support Specialist, Telecoms Helpdesk Engineer may also be considered for this role.

This role has a significant impact on shaping the Mobile RAN Rate: £ inside IR35 Location: London or Bristol 3 days onsite 2 wfh Duration: 6 months * Technical Expertise:  Expert knowledge of UE logs analysis  Expert understanding of Acuver UE logging tools.  In depth knowledge of Mobile networks particularly 4G & Public Safety functionality over LTE/5G+ with particularly deep understanding design and operation.  In depth knowledge of LTE & SIP signalling, PTT (push to talk), SRTP/DTLS troubleshooting & Optimisation.  Excellent understanding of Nokia and Ericsson RAN products.  Good understanding of 3GPP & ETSI specifications.  Good understding of DTLS/SRTP protols. * Story-telling with data: * strong skills in building the case for change, drawing on data and analytical techniques where appropriate, and communicating this to technical & business audiences. * Ability to convert highly technical concepts into simple to understand language. * Forward thinking: * proactive approach to network design, ability to see beyond the current network and forsee what will be required to deliver networks of the future. * Maintain high level of domain expertise, keeping abreast of the developments within the telecoms market, to ensure continued delivery to time, cost and quality in the face of both internal and external change MANDATORY:  Extensive experience in mobile telecommunications industry in the role of a performance SME with business-critical, high-availability / high-throughput systems and networks.  Able to provide technical solutions, processes definition for network performance & optimisation of 4G based RAN Macro network.  Proven experience in defining and understanding KPI definitions, formula and measurements of radio networks  Able to analyse in depth, drive test logs, wireshark traces and protocol analysers traces for 4G networks  Good Knowledge of LTE parameters & timers.  Familiarity with test software & devices (Nemo/TEMs/Accuver) & post processing tools (Actix).  Experience of working with 3rd parties network/IT Suppliers.  Experience of Nokia RAN. Please share your latest CV LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. A multiple award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over consecutive years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Cisco Collaboration Engineer We're looking for an experienced Cisco Collaboration Engineer to join a high-performing team supporting and delivering enterprise Unified Communications and Video Conferencing solutions. You'll play a key role in project delivery, technical escalations, incident resolution, platform administration, and the ongoing optimisation of a complex Cisco Collaboration environment. Key Skills Required: Cisco Unified Communications Manager (CUCM) Cisco Unity Connection Cisco Meeting Server (CMS) Cisco Expressway (C & E) Mobile Remote Access (MRA) Cisco Jabber / Webex Cisco TelePresence & Video Conferencing SIP & H.323 protocols Cisco CUBE TMS VMware Endpoint and room system support Responsibilities: Support and deliver Cisco voice and video projects Resolve complex incidents and technical escalations Maintain and optimise collaboration platforms Support video conferencing infrastructure and endpoints Produce and update technical documentation Work closely with customers, vendors and internal stakeholders Knowledge sharing and mentoring within the team Desirable: CCNP Collaboration / Voice Expressway, CMS and Webex expertise Experience with enterprise Voice & Video estates Strong troubleshooting and stakeholder management skills Due to the nature and urgency of this post, candidates holding or who have held high level security clearance in the past are most welcome to apply. Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 10 weeks. LA International is an award-winning partner of choice for many of the world's most influential companies and government organisations. Holding Enhanced Government Security Accreditation, we are recognised as the European market leader in the delivery of Security Cleared talent to organisations that demand the very highest levels of security, compliance and assurance. An award-winning organisation, having secured the prestigious Queens Award for Enterprise: International Trade over multiple years. We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience. Please Note: If a high volume of applications is received, only candidates shortlisted will be contacted.

Basée à Lille, Lyon, Nantes, Grenoble, Marseille, Paris et Bruxelles, Insitoo Freelances est une société du groupe Insitoo, spécialisée dans le placement et le sourcing des Freelances IT et Métier. Depuis 2007, Insitoo Freelances a su s'imposer comme une référence en matière de freelancing par son expertise dans l'IT et ses valeurs de transparence et de proximité. Actuellement, afin de répondre aux besoins de nos clients, nous recherchons un Expert N3 Téléphonie Enterprise et Teams Phone (H/F) à Lille, France. Contexte : Dans un contexte à dimension internationale, couvrant les magasins, les sites centraux et la logistique, le ou la consultant(e) interviendra au sein de l'équipe EUCD pour piloter, améliorer et gérer les services de téléphonie. Les missions attendues par le Expert N3 Téléphonie Enterprise et Teams Phone (H/F) : Dans le cadre du projet de remplacement des services de téléphonie existants, il ou elle pilotera le déploiement des nouveaux services de téléphonie, en coordination avec le partenaire retenu et les correspondants des sites. Le service fonctionne dans un format Produit combinant le maintien en condition opérationnelle (Run / MCO) et la gestion des projets ou évolutions (Build). Le consultant devra assurer une expertise technique et fonctionnelle, contribuer à la structuration des processus, piloter les prestataires et accompagner les métiers dans l'usage des solutions. Le service adopte une approche "You build it, you run it" : les équipes sont donc responsables à la fois de la conception, du déploiement et du maintien en condition opérationnelle des solutions. Rattachement au Responsable de service EUCD, travail en coordination avec les équipes Téléphonies, Réseau, Support et partenaires. Accompagne le Product owner du périmètre Téléphonie. Périmètre technique • Téléphonie IP / Softphonie (Micollab, Mivoice, PABX/IPBX, SIP, Teams Phone) — maîtrise attendue • Réseaux WAN, LAN et Wi-Fi (QoS, LAN/WAN, WIFI,DHCP,DNS,Vlan Voice) — maîtrise attendue • Teams, Microsoft Teams Phone, Teams Admin Center – maitrise attendue • Connaissance d'une solution de gestion des terminaux mobiles, idéalement Microsoft Intune, Workspace One ainsi que des écosystèmes Apple et Android. Principaux challenges • Atteindre les niveaux de service attendus. • Garantir le bon déroulement de l'activité opérationnelle. • Gérer des missions liées à la conduite de projets. • Contribuer à l'optimisation continue des services de téléphonie. Missions principales • S'approprier les projets et comprendre leurs contraintes. • Organiser et planifier leur mise en œuvre en s'appuyant sur des ressources internes et/ou externes. • Spécifier et coordonner les tâches de configuration avec l'équipe déploiement. • S'assurer du bon déroulement des mises en production, du reporting vers le client et de la rédaction de la documentation d'exploitation. • Participer à la définition et à l'amélioration d'un modèle self-service permettant de simplifier les demandes, accélérer les traitements et réduire la dépendance aux équipes support. • Coordonner les partenaires, opérateurs, équipes réseau, équipes de déploiement et correspondants locaux. • Prendre en charge les incidents complexes et les escalades N3 • Analyse les incidents récurrents N2 et N3 afin de mettre en œuvre des actions permettant leur automatisation, leur simplification ou leur prise en charge par le N1. • Participer aux cellules de crise

De nouveaux projets ont été engagés par les services Corporate de notre client (en particulier les directions Finance et RH) et le superviseur demande une montée en maturité de la première ligne de défense. Un besoin de renfort externe a été identifié pour sécuriser l'exécution des activités de contrôle niveau 1. Les OPC doivent prendre en main et appliquer opérationnellement les e en ma ln méthodologies de gestion des risques et de contrôle permanent. Pour appuyer la conduite du changement, ils seront accompagnés aux plus proches de leurs activités de contrôle de premières lignes de défense. La filière « risque et contrôle permanent » est clé au regard de la réglementation SIPS et de la Banque de France et exigent un niveau de compétences adéquats afin de garantir une maturité de l'environnement de contrôle et des risques suffisante et durable Définition de la prestation Exécution de contrôles de premier niveau trimestriels pour aider les contrôleurs des directions. Réalisation de vérification de la correcte exécution des contrôles niveau 1 (traçabilité des résultats, preuves et cohérence des résultats) pour aider les OPC. Simplification et réévaluation des contrôles de premiers niveaux avant le début de la campagne 2027 (janvier 2027). Livrables - Résultat des contrôles niveau 1 formalisé dans les règles de l'art et suivant les procédures internes - Bibliothèque CN1 mise à jour sur les périmètres Corporate - Mise à jour des risques, des KRI - Calcul des KRI - Mise en place d'une gouvernance pour le suivi des risques et des contrôles