Cale Ziemer
Senior VoIP Project Engineer | Enterprise Infrastructure Architect | Full Lifecycle Project Management
- Role
- Voip Engineer Sr at Advocate Aurora Health
- Location
- Milwaukee, WI, US
- LinkedIn followers
- 500 followers
About Cale Ziemer
PROFESSIONAL SUMMARYSenior VoIP Project Engineer | Enterprise Infrastructure Architect Strategic leader with over 25 years of expertise in the deployment and management of complex enterprise and SMB voice systems. Proven track record in high-density, mission-critical environments, managing infrastructure scaling from 100 to endpoints. Specialist in the full project lifecycle, bridging legacy telephony with modern IP solutions including Avaya IP Office and Alcatel-Lucent OXE. Authority in both logical VoIP network architecture and physical MDF/IDF infrastructure for high-availability communication systems.TECHNICAL SKILLS Project Management: Full Project Lifecycle Management, Strategic Capacity Planning, Onsite & Remote End-User, Administrative, and Executive Training, Large-Scale Systems Cutover, Technical Vendor Management, and Risk Mitigation. Networking & Infrastructure: Comprehensive understanding of TCP/IP, routing, and switching protocols (SIP, LAN, WAN, VLAN segmentation); Expertise in QoS (DSCP/CoS) and MDF/IDF wiring architecture. VoIP & Telephony: Specialized knowledge including Avaya IP Office (500 V2, Server Edition, Select) and Alcatel-Lucent OXE (Enterprise); proficient in H.323, RTP, ISDN/PRI, and Hybrid PBX Integration. Call Routing & Logic: Hierarchical Dial Plan Design, Least-Cost Routing (LCR), Custom Call-Flow Architectures, and Failover Redundancy for mission-critical environments. Call Center & Contact Center: ACD (Automatic Call Distribution), Skills-Based Routing, Queue Management, Real-Time Reporting, and Workforce Optimization (WFO) integrations.PROFESSIONAL EXPERIENCESenior VoIP Engineer | Advocate HealthcareJanuary 2021 – PresentIndependent Telephony Consultant | CZ Technologies2005 – 2021Telephony & Network Systems Specialist | Various earlier roles1997 – 2005Technical Proficiencies & Keywords: Core Competencies: VoIP Architecture • Full Project Lifecycle Management • MDF/IDF Infrastructure • Enterprise Voice Migration • SMB Telephony Strategy • SIP Trunking • TCP/IP Networking • VLAN Segmentation • Quality of Service (QoS) • Structured Cabling Design • Capacity Planning • Vendor Management • Large-Scale System Cutovers.Platforms: Avaya • Alcatel-Lucent OXE • Partner ACS • Legacy PBX Migration • ACD & Contact Center Logic • Skills-Based Routing • VoIP.
Experience
Voip Engineer Sr
Mar 2022 — Present · Milwaukee, WI, US
Design, plan and implement the telecommunication platforms for hospitals and health centers in SE Wisconsin.
Education
University of Wisconsin-Madison
BA, Sociology
1993 — 1996
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