NEC SL2100 PBX System with 3-Trunk 8-Extension Card
The NEC SL2100 PBX System is a premises-based business communication platform supplied with a card supporting three analogue trunks and eight hybrid extensions. This configuration suits small organisations that need central control of incoming, outgoing, and internal calls. Moreover, its modular architecture allows businesses to add supported hardware and functions as their communication requirements develop.
Product Overview
The included IP7WW-308U-A1 board combines three analogue central office trunk connections with eight hybrid extension ports. Therefore, a business can connect external telephone services and internal users through one organised system. Hybrid extension support also provides flexibility when selecting compatible endpoint types.
The NEC SL2100 PBX System uses a modular chassis with universal expansion slots. As a result, organisations can expand beyond the initial configuration using supported boards and licences. The platform supports analogue, digital, and Internet Protocol communication technologies, although available functions depend on the installed hardware, software, licences, and service configuration.
Key Features
- Includes three analogue trunk ports, allowing the system to connect to compatible external telephone lines.
- Provides eight hybrid extension ports, supporting internal telephone connections for staff and departments.
- Uses a modular architecture, enabling organisations to add supported boards as their communication needs grow.
- Supports call transfer and call forwarding, helping employees route calls to the correct person or extension.
- Provides conferencing capabilities, allowing several participants to communicate within one call session.
- Supports voicemail and auto-attendant functions, helping businesses manage calls when staff cannot answer immediately.
- Accommodates analogue, digital, and Internet Protocol extensions through suitable system hardware.
- Supports premises-based deployment, giving the organisation local control of its communication platform.
- Offers wall or rack installation options, providing flexibility when planning the equipment area.
- Uses a fanless, slot-in chassis design, supporting quiet operation in suitable office environments.
Technical Specifications
- Brand: NEC
- Model: SL2100
- Product type: Private Branch Exchange communication system
- Included extension board: IP7WW-308U-A1
- Analogue trunks on included board: 3
- Hybrid extensions on included board: 8
- Chassis design: Modular and fanless
- Expansion slots: Four universal slots and one CPU or expansion interface slot
- Supported connection types: Analogue, digital, and Internet Protocol
- Installation options: Wall or rack mounting
- Optional trunk technologies: Analogue, Session Initiation Protocol, Integrated Services Digital Network Basic Rate Interface, and Primary Rate Interface
- Colour: Black
Common Applications
The NEC SL2100 PBX System suits small offices, schools, clinics, hotels, retail premises, warehouses, and professional service firms. Its default port configuration supports businesses starting with three external lines and eight internal telephone points. Furthermore, modular expansion makes it suitable for organisations expecting additional users, trunks, or communication services later.
Why Choose This Product?
The included 3-trunk and 8-extension board creates a useful starting configuration for everyday business calls. Meanwhile, modular slots protect operational value by allowing supported upgrades instead of requiring an immediate system replacement. Wall and rack installation options also simplify deployment in different equipment spaces.
The NEC SL2100 PBX System combines traditional telephone connectivity with a platform designed for expansion. Consequently, it provides structured call management for growing organisations that require local control, flexible installation, and support for several endpoint technologies.
Frequently Asked Questions
Which card provides the three trunks and eight extensions?
The IP7WW-308U-A1 board provides three analogue trunk ports and eight hybrid extension ports within this SL2100 configuration.
Are the eight included ports standard analogue-only extensions?
The included board provides eight hybrid extension ports. The exact telephone types supported depend on system programming, installed hardware, and regional configuration.
Can a Primary Rate Interface connection be added later?
Primary Rate Interface connectivity requires the appropriate optional daughter board and a compatible host-board configuration. An installer should confirm available slots and regional support first.
Must expansion boards be installed while the system is powered off?
NEC states that option boards must be inserted or removed while power is off. The system will not recognise a board installed while it remains powered.

















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