3Com NBX Superstack 3 3C17224 Switch Cascade Module (Refurbished) Nortel Networks

3Com NBX Superstack 3 3C17224 Switch Cascade Module (Refurbished) Nortel Networks3COM NBX Superstack 3 Switch 3C17224 Cascade Module Key Features: Mfr. Part #: 3C17224 Allows you to connect two 4400 switches together 2x 3c17224 modules and one 3C17225 cascade cable required Note: For the 3C17205 POE SuperStack 3 Switch 4400 PWR Condition: Refurbished

Provides 2 RS232C serial interfaces with DB9 connectors for connection to a computer

These can be used to add digital stations

NEC 700250 Electra Mark II ESI-EA-ETU 8-Port Station Card (Refurbished)

Use the 3x8 expansion cards to configure up to 18 x 48

This card provides 12 Digital station ports and no CO ports

or Partner ACS

Configuration can be automatic or manual via DHCP or TFTP

Monitors cabinet temperature and airflow and originates alarms to the remote maintenance system

It interfaced to the system via a PN-2DLCC card or a PN-4DLCF card (4 wire cabling)

ensuring pristine condition and dependable performance for new installations or system expansions

Item Includes:

Using the Settings menu of the Cisco Unified IP Phones 7960G