1 of 1 ISDN Jobs in Birmingham

for all VOIP-related incidents and problems. Lead the design, implementation, and migration of enterprise telephony services (Cisco Call Manager, SIP/Cloud platforms). Manage the transition from ISDN-based services to SIP/cloud voice solutions, ensuring resilience, cost-effectiveness, and future scalability. Oversee the integration of VOIP with core network, data centre, and security infrastructures. Ensure high … apply, you must have the following skills & experience: Extensive experience with enterprise VOIP and Unified Communications platforms (Cisco Call Manager, SIP, Cloud Voice). In-depth knowledge of SIP, ISDN, PSTN, RTP/SRTP, and voice gateway technologies. Strong understanding of QoS, DHCP, DNS, and network dependencies impacting voice quality. Proven track record of migrating from legacy voice systems to More ❯