VoIP Circuit

The Cisco Analog Telephone Adaptor products are standards-based communication devices that deliver true, next generation voice-over-IP (VoIP) terminations to businesses and residences worldwide.

The Cisco ATA 186 supports two voice ports, each with its own independent telephone number, and a single 10BaseT Ethernet port. This adaptor can make use of existing Ethernet LANs, in addition to broadband pipes such as digital subscriber line (DSL), fixed wireless, and cable modem deployments.

The Cisco ATA 186 helps customers turn their analog phone devices into IP devices cost-effectively and is the preferred solution to address the needs of customers who connect to either enterprise networks, small-office environments, or the emerging VoIP managed voice services and local services market.

Enterprise customers are using the Cisco ATA 186 to connect analog phones and FAX machines to their VoIP network. Service providers are taking advantage of emerging telephony applications and the ease of deploying second-line services using the Cisco ATA 186.

Cisco ATA 186 Analog Telephone Adapter Quick Overview:

• Two voice ports support legacy (analog) touch tone telephones
  
  
• RJ 45 connection to 10BaseT Ethernet hub or switch
  
  
• Auto-provisioning with Trivial File Transfer Protocol (TFTP) provisioning servers
  
  
• Web configuration through built-in Web server
  
  
• High performance line-echo cancellation eliminates noise and echo
  
  
• Session Initiation Protocol (SIP) and Skinny Client Control Protocol (SCCP)-Cisco CallManager technology
  
  
• G.729, G.729A, G.729AB2, G.723.1, G.711a-law, G.711µ-law
  
  
• Automatic assignment of IP address, network route IP, and subnet mask via Dynamic Host Configuration Protocol (DHCP)
  

The difference between the ATA186-I1-A and the ATA186-I2-A is the I1-A version has 600 ohm impedance and the I2-A version has 270 ohm impedance in series with 750 ohm and 150 NF in parallel.