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Introducing Cisco Small Business Analog Telephone Adapters
Comparison of ATA Devices
ATA Administration Guide 17
1
Comparison of ATA Devices
Each 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. An 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 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 ATA
devices described in this document.
Product
Name
FXS
(Analog
Phone)
FXO
PSTN
RJ-45
Internet
(WAN)
RJ-45
Ethernet
(LAN)
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 Mainte-
nance
only
8 Voice adapter with
support for up to
eight FXS devices.
Supports SIP
Trunking for inbound
call routing to trunk
groups.
WRP400 2 — 1 4 2 Wireless-G IP router
with two FXS ports.
Provides ATA device
functionality. Can be
remotely
provisioned.
WRTP54G 2 — 1 4 2 Wireless-G IP router
with two FXS ports.
Provides ATA device
functionality.