Introduction to the Gateway
Product Overview
SRP 521 VoIP Gateway Administration Guide
9
1
REVIEW DRAFT — CISCO CONFIDENTIAL
SRP521 Back Panel
Feature
Description
PHONE Ports
Use these ports to connect analog phones.
FXO LINE Port
Use this port to connect to the Public Switched Telephone
Network (PSTN) which is the analog telephone service
network that traditional phone service uses.
WAN Port
Use this port to connect the SRP521 to your WAN or DSL
Internet connection.
LAN Ports 1 to 4
Use these ports to connect to a network device.
On/Off Switch
Use this switch to power the SRP521 on or off.
12 V DC Power
Use this port to connect the power adapter.
276375
12VDC
LAN (10/100)
WAN (10/100)
2
1
1
2
3
4
LINE (FXO)
PHONE (FXS)
WAN
Port
On/Off
Switch
FXO
Line
Port
Phone
Ports
12V DC
Power
LAN
Ports