Linksys ATA Administration Guide
16
Comparison of ATA Devices
Introducing Linksys Analog Telephone Adapters
Comparison of ATA Devices
Each Linksys ATA device is an intelligent low-density Voice over IP (VoIP) gateway that enables
carrier-class residential and business IP Telephony services delivered over broadband or high-
speed Internet connections. A Linksys ATA device maintains the state of each call it terminates
and makes the proper reaction to user input events (such as on/off hook or hook flash). The
Linksys ATA devices use the Session Initiation Protocol (SIP) open standard so there is little or no
involvement by a “middle-man” server or media gateway controller. SIP allows interoperation
with all ITSPs that support SIP.
The following table summarizes the ports and features provided by the Linksys ATA devices
described in this document.
NOTE:
The information contained in this guide is not a warranty from Linksys, a division of
Cisco Systems, Inc. Customers planning to use Linksys ATA devices in a VoIP service deployment
are advised to test all functionality they plan to support before putting the Linksys ATA device
in service. By implementing Linksys ATA devices with the SIP protocol, intelligent endpoints at
the edges of a network perform the bulk of the call processing. This allows the deployment of a
large network with thousands of subscribers without complicated, expensive servers.
Product
Name
FXS
(Analog
Phone)
FXO
PSTN
Connect-
ion
RJ-45
Internet
(WAN)
RJ-45
Ethernet
(LAN)
Configurable
Voice Lines
Description
PAP2T
2
—
1
—
2
Voice adapter with two
FXS ports.
SPA2102
2
—
1
1
2
Voice adapter with
router.
SPA3102
1
1
1
1
1
Voice adapter with
router and PSTN
connectivity.
SPA8000
8
—
1
Maintenance
only
8
Voice adapter with
support for up to eight
FXS devices. Supports
SIP Trunking for inbound
call routing to trunk
groups.
RTP300
2
—
1
4
2
IP router with two FXS
ports. Provides ATA
device functionality.
WRP400
2
—
1
4
2
Wireless-G IP router with
two FXS ports. Provides
ATA device functionality.
Can be remotely
provisioned.
WRTP54G
WAG54GP2
2
—
1
4
2
Wireless-G IP router with
two FXS ports. Provides
ATA device functionality.
AG310
1
1
1
1
1
ADSL2+ gateway with
VoIP and PSTN
connectivity. Provides
ATA device functionality.