Specifications

Model: Panasonic KX-NS320BX
Product Type: Smart Hybrid IP PABX Expansion Unit
Base Compatibility: Designed for expansion of Panasonic KX-NS300BX PABX systems

Built-in Ports:

• 16 Single Line Telephone (SLT) analog extension ports

• Caller ID and message waiting support on SLTs

Expansion Capabilities (per unit):

• 2 Trunk card slots

• 2 Extension card slots

• Connects to base KX-NS300BX via link card (KX-NS5130X)

• Up to 3 NS320BX units can be linked to one NS300BX

Maximum System Capacity (NS300BX + NS320BX):

• Up to 48 trunk lines

• Up to 130 analog/digital extensions

• Up to 128 IP extensions (requires optional licensing)

• Maximum 192 total extensions (analog, digital, IP combined)

Supported Features (with NS300 system):

• Analog, digital, and IP telephony

• SIP trunking

• Voicemail, auto-attendant, and unified communications (with licenses)

• Web-based or PC-based configuration

• Voice messaging, call routing, and mobile softphone support

Power & Physical:

• Power input: 100–240 V AC, 50/60 Hz

• Dimensions: Approx. 430 × 88 × 367 mm

• Weight: Approx. 4.5 kg

• Mounting: Rack or shelf mountable

Certifications:

• CE, ISO, RoHS (depending on market)

• Origin: Manufactured in Vietnam or China (model dependent)

Description

The Panasonic KX-NS320BX is an expansion cabinet designed to extend the capacity of the Panasonic KX-NS300BX hybrid IP PABX system. It includes 16 built-in analog extension ports and allows further expansion via trunk and extension cards.

Each NS320BX unit connects to the NS300BX base using the KX-NS5130X link card. Up to three NS320BX units can be added, allowing the system to scale to a total of 48 trunk lines and up to 130 analog/digital extensions. When combined with licensed IP extensions, the full system supports up to 192 total users.

The NS320BX enables businesses to scale their communications infrastructure while maintaining a hybrid environment that includes analog, digital, and IP-based devices. It is well-suited for organizations transitioning from legacy telephony systems to VoIP or SIP-based networks.

Programming and management are handled via the NS300 web interface or Panasonic programming software. The NS320BX supports advanced call handling, voice mail, auto-attendant, mobile extension features, and SIP trunking when used with the NS300.

This system is ideal for medium-sized offices, institutions, hotels, or call centers requiring a mix of analog and IP telephony with centralized control and modular scalability.