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AT&T

Runs US wireless and fiber internet networks

Telephony Systems Administrator

Enterprise ApplicationsConfirmed live in the last 24 hours
Full-timeColumbia, MD, USA$89.2k - $129.4k /yr

About the Job

Requirements

  • Seven years of experience as a systems administrator in programs and contracts of similar scope, type, and complexity are required.
  • A bachelor's degree in Math, Science, Engineering, Statistics, Engineering Management, or a related discipline from an accredited college or university is required; five additional years of systems administrator experience may be substituted for the degree.
  • Experience configuring and administering common time-division multiplexing and voice over internet protocol telephone call-manager systems, such as Nortel Meridian PBXs and Cisco Unified Call Manager.
  • Large-scale Cisco Voice implementation experience in a multi-cluster environment and data networking infrastructure.
  • Working knowledge of H.323 and Session Initiation Protocol.
  • Familiarity with Cisco UCS platforms, voice gateways, virtualization, and ESXi.
  • DoD 8570 IAM Level 2 is required.
  • A TS/SCI clearance with polygraph is required.

Responsibilities

  • Provide overall system administration for an enterprise-wide Cisco Unified Communications Manager and related systems.
  • Plan regular maintenance tasks, including updates and upgrades.
  • Maintain current and accurate documentation of system configurations.
  • Design, administer, and analyze corporate dial plans and traffic routes for the voice network structure.
  • Administer and monitor voice systems for performance and service-level agreement attainment.
  • Provide support as needed for lower-tier break/fix resolution and move/add/change/deactivation requests for all telecommunications systems.

About the Company

AT&T

Runs US wireless and fiber internet networks

AT&T sells mobile phone plans and home internet to households and businesses across the US, and runs a wireless business in Mexico. Its business rests on two networks: a nationwide 5G wireless network and a fiber internet network that is replacing its old copper phone lines. Companies and government agencies also buy private networks, security and connectivity services from its business unit. Most revenue comes from monthly service plans plus device installment payments, and the company pushes customers to combine phone and home internet. AT&T Inc. began in 1983 as Southwestern Bell, took the AT&T name after buying its former parent in 2005, and is based in Dallas, Texas.

Company size
10,001+
Company stage
IPO
Headquarters
Dallas, TX
Founded
1983

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