Linksys SPA9000 Administration Guide

Linksys Voice System Administration Guide 23
Upgrading Firmware for the SPA9000
Basic Administration of the SPA9000
4. In the Confirm Upgrade window, verify that the correct device information and product
number appear. Then click Upgrade.
5. When the confirmation message appears, click OK.
6. To verify the upgrade, complete the following steps:

Linksys SPA9000 Specifications

Physical Interfaces

Ethernet ports	2 10/100BaseT RJ-45
Phone ports	2 RJ-11 FXS
Ring voltage	40-55 VRMS
Ring frequency	10 Hz - 40 Hz
Maximum ringer load	3 REN

Power

On-hook voltage	-50 V NOMINAL
Off-hook current	25 mA min
Terminating impedance	Configurable, including 600 ohms