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"We were looking for a single point of contact for our telecom service needs to handle our national footprint and supplement our corporate telecom department. Tandem Data is very responsive in getting our requests handled in a timely manner. I cannot imagine using another group after this experience."

M. Howsen, Director IT, Cross Point Funding

NEC Authorized Dealer

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NEC SL Series TDM/VoIP Telephone Systems

Built-in Brilliance


NEC's SL Series digital/VoIP hybrid systems are engineered to maximize the value of your telephony investment by providing state-of-the-art features and functionality at an entry-level price.

Compatible with both digital and VoIP telephones, and easily scalable from a three-phone system to a multi-chassis system supporting up to 128 extensions across 50 locations, the NEC SL Series is future-proof, protecting your investment as your business grows.

The SL Series delivers a robust integrated unified communications solution out of the box, featuring click-to-dial, call management, Microsoft Outlook and CRM integration, and full support for mobile and remote workers.


Key Features:

  • Powerful communications with a small business price tag
  • Delivers an integrated Unified Communications solution that enhances your organization’s productivity and collaboration
  • Completely scalable as your business grows
  • Intuitive applications and features that are easy to use
  • E911 feature alerts specified users of the location of the 911 call so that first responders can be easily directed once onsite

New Systems

NEC SL 2100 Phone System
NEC SL2100
IP Phone System

Key Features:

  • Supports digital and VoIP phones
  • Scalable up to 128 extensions
  • Network up to 50 locations
  • Built-in gigabit
  • In-office experience for mobile/home office users
  • Voicemail
  • Audio conferencing
  • Video conferencing (with optional license)
  • Call Recording
  • Mobile Extension
  • User-friendly interface
  • Wireless headset support
  • Automatic call distribution
  • Contact Center

Legacy Systems

NEC SL100 Legacy Phone System
NEC SL1100
IP Phone System
The NEC SL1100 phone system provides your business with a highly cost-effective unified communications solution, allowing you to leverage the latest productivity-enhancing IP applications to deliver increased performance throughout your organization.
  • Lowers your costs
  • Excellent remote/home office capabilities
  • Increases your productivity
  • Future-proofs your business