Cisco ATA 192 Multiplatform Analog Telephone Adapter, 2 FXS Ports, 2 × 10/100 Ethernet with Router, for SIP Platforms

The Cisco ATA 192 Multiplatform is a compact Cisco adapter that connects two analogue phones, fax machines or door/lift lines to an IP telephony system. It registers each FXS port as its own line on Webex Calling, BroadWorks, Metaswitch, Asterisk and other third-party SIP platforms, so legacy devices keep working after the move to VoIP.

The ATA 192 adds a second Ethernet port and a built-in router: the NETWORK port goes to the LAN or internet, and the ETHERNET port feeds a PC, so one cable serves both the phones and the computer.

• Cisco ATA 192 Multiplatform adapter
• Cisco 5 V DC power adapter (100–240 V AC input, approx. 1.8 m cord)
• No Ethernet cable or wall-mount screws are listed by Cisco

• Keep the fax machine, a franking machine line or analogue cordless phones on the new IP system.
• Two independent lines: each FXS port has its own number and can be used at the same time.
• Fax over IP with T.38 (Group 3) or G.711 pass-through; for critical fax traffic Cisco still recommends testing with your provider.
• Install where there is only one network socket — the PC plugs into the ATA's LAN port (10/100 only).

• Registration on Cisco Unified CM (on-premises) — that is the ATA191-K9.
• PoE — the adapter runs only from its 5 V power supply.
• Gigabit Ethernet — ports are 10/100, so the PC behind it is capped at 100 Mbps.
• Connecting a PSTN/analogue line from the telco — FXS ports drive phones; they do not accept an incoming line (that needs an FXO gateway).