Introducing Cisco Small Business Analog Telephone Adapters

Comparison of ATA Devices

ATA Administration Guide 19
1

Figure1 How ATAs Provide Voice Connectivity

The SPA3102 and SPA8000 act as SIP-PSTN gateways. They provide PSTN

connectivity in addition to a single FXS port.

The WRP400 and WRTP54G routers provide ports for analog telephone

devices and provide QoS in the form of priority packet queueing.

SPA3102
Broadband
router
Broadband
router
SPA8000,
PAP2T
DSL/cable
modem
WRP400,
WRTP54G,
and SPA2102
Ethernet/Wireless
LAN
Fax (up to 4
SPA8000)
Analog phone
(up to 8 with
SPA8000)
PSTN
Ethernet/Wired
LAN
Internet
187255-revised