Spa2102 Connectivity - Cisco Small Business Pro SPA3102 Administration Manual

Introducing Cisco Small Business Analog Telephone Adapters
ATA Connectivity Requirements
NOTE
ATA Administration Guide

SPA2102 Connectivity

As shown in the following illustration, the SPA2102 has two FXS ports (voice lines
1 and 2).
Administrative
IVR (Line 1 or
Line 2)
Line 1
Line 2
SPA2102
By default, the device attached to the LAN port is assigned the network address
192. 1 68.0.0 with a subnet mask of 255.255.255.0. If there is a network address
conflict with a device on the Ethernet port, the network address of the device on
the LAN port is automatically changed to 192. 1 68. 1 .0.
•
The IVR functions are accessed by connecting an analog telephone to Line 1.
•
For proper operation, the service provider should use an Outbound Proxy to
forward all voice traffic when the SPA2102 is located behind a router. If
necessary, explicit port ranges can be specified for SIP and RTP.
IP Router (with
hairpinning) or
Broadband modem
Ethernet
port
LAN
LAN
port
1
Internet
ISP
WAN
IP
IP
ITSP
Administration
PC
22