Linksys SPA9000 Administration Guide

Linksys Voice System Administration Guide 239
IVR Interactive Voice Response
LAN Local Area Network
LBR Low Bit Rate
LBRC Low Bit Rate Codec
MC Mini-Certificate
MGCP Media Gateway Control Protocol
MOH Music On Hold
MOS Mean Opinion Score (1-5, the higher the better)
ms Millisecond
MSA Music Source Adaptor
MWI Message Waiting Indication
OSI Open Switching Interval
PCB Printed Circuit Board
PR Polarity Reversal
PS Provisioning Server
PSQM Perceptual Speech Quality Measurement (1-5, the lower the better)
PSTN Public Switched Telephone Network
NAT Network Address Translation
OOB Out-of-band
REQT (SIP) Request Message
RESP (SIP) Response Message
RSC (SIP) Response Status Code, such as 404, 302, 600
RTP Real Time Protocol
RTT Round Trip Time
SAS Streaming Audio Server
SDP Session Description Protocol
SDRAM Synchronous DRAM
sec seconds
SIP Session Initiation Protocol
SLA Shared line appearance
SLIC Subscriber Line Interface Circuit
SP Service Provider
SPA Linksys Phone Adaptor
SSL Secure Socket Layer
TFTP Trivial File Transfer Protocol
TCP Transmission Control Protocol
UA User Agent
uC Micro-controller
UDP User Datagram Protocol
URL Uniform Resource Locator
VM Voicemail
VMWI Visual Message Waiting Indication/Indicator

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