1272 Bond Street, Naperville, IL 60563 630-505-7500


Work At ATI

VoIP Network Engineer

Advanced Telecommunications of Illinois Inc. is currently looking for a VoIP/Network Engineer to support our customers. This will be a part field and part in-house Technical Assistance Center position.

You'll be working on our clients' VOIP, UCaas and Network Infrastructure products and contribute to the strategic objectives by installing, servicing and supporting their voice applications and infrastructure.


• Design develop and service solutions to provide reliable SIP/MGCP services to customer endpoints including on-premise and hosted handsets, and soft-phones.
• Support Network data equipment as it relates to the VOIP infrastructure
• Document and communicate in detail all interactions with the customer as it relates to open service orders. Keep accurate changelogs of all work completed
• Collaborate in projects with team members and focus on improving infrastructure and documentation
• Be part of the after-hours on-call rotation


• At least 4 years of experience as a VOIP engineer/systems engineer
• Solid knowledge of SIP Stack and TDM Voice Infrastructures
• Fundamental understanding and experience of network routing/switching, and virtualization. Solid skillsets in VMware, Hyper-V, TCP, UDP, RTP, RTCP, DNS, DHCP are required.
• Experience with ShoreTel/Mitel platforms in a physical infrastructure as well systems within a virtual environment
• Experience configuring and troubleshooting network equipment from Cisco, Adtran and HP.
• Excellent communications and team player skills
• Reliable transportation as field work is required

Value Adds:

• Experience with Amazon Web Services
• CCNA/CCNP Routing and Switching
• Familiar with Linux system administration

Voice & Data Technical Specialist (TECH)

Advanced Telecommunications Holdings is a ShoreTel Gold dealer and a Mitel Platinum Dealer. An industry leader in new voice and data deployments since 1983.   

We have an open position for an experienced installation and service technician with knowledge of voice and data networks, PRI/T1 and low voltage wiring based out of our Naperville, IL Headquarters.   

Responsibilities include:   

New Installations: Install complete phone systems and data equipment deployments.  Work with voice and data carriers to ensure a smooth cutover.  Install telephone endpoints and peripherals.  Be onsite at customer premises for cutover and follow up.  Provide post installation support.  Must be able to work in a fast paced environment.  Must be comfortable with conducting occasional training sessions on usage of telephones and peripherals.   

Existing Customer Service: Provide onsite and remote support to our existing customer base.  Duties may include troubleshooting call routing issues and equipment failures, dealing with voice and data network outages, working with voice and data carriers in the event of outages and for troubleshooting. Technician will be mainly in the field but will occasionally be in the office to provide support to our in house service team.   

Applicant must have excellent communication and organizational skills.  Knowledge of Mitel HX and/or ShoreTel phone systems is preferred but a telecommunications background is required.  Data networking background is required.  CCNA or similar background preferred.  Must have reliable daily transportation.  Mileage is paid and overtime hours are available based on work load.  Occasional travel may be required.
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