Linksys SPA9000 Administration Guide

Linksys Voice System Administration Guide 16
Deployment Scenarios
Getting Started
• ”ITSP Service, PSTN and ISDN Access and Local Voice Mail,” on page 19
Deploying the LVS with PSTN Access and Local Voice Mail
In this scenario, the customer requires a robust phone system but is not using VoIP services. The
LVS is deployed with a SPA9000 IP PBX, one SPA400 for PSTN access with four FXO ports, and
another SPA400 for local voice mail service. Optionally, analog phones or fax machines (not
illustrated) can be connected to the two phone ports on the SPA9000.
SPA9xx IP Phones
SLM224P Switch SPA9000 IP PBX
Analog
Phone Lines
SPA400
for Voice Mail
SPA400
for PSTN Access

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