Cisco ATA188-I1-A enterprise networking (router/Catalyst switch/UCS families) Datacentre Switch

The Cisco ATA188-I1-A is a Cisco ATA 188 Analog Telephone Adaptor, a 2-port device with an integrated Ethernet switch and 600-ohm line impedance, used to connect standard analogue telephones or fax machines to a VoIP network. Each of its two FXS ports converts an analogue voice or fax signal to SIP or SCCP for transport over IP, letting existing analogue handsets or fax machines keep working alongside an IP telephony deployment rather than needing replacement with IP-native endpoints. The 600-ohm impedance setting matches the analogue-line standard used across most of Europe, including the UK. It is a routine fit for sites migrating to VoIP that still need to support legacy analogue equipment. Tech-Star supplies genuine Cisco voice-gateway spares for maintaining established analogue-to-VoIP deployments.