The Cisco 12000 Series 1-Port Channelized OC-12 (CHOC-12/DS3) Line Card is designed to simplify the deployment of DS3 services. The CHOC-12/DS3 line card provides up to 12 DS3 channels over a single optical interface.
The 1-port CHOC-12/DS3 can transmit IP packets directly over SONET-based optical interfaces at wire speed. The card is based on an innovative transmission method that enables the Cisco 12000 to transmit and receive DS3-based IP packets across standard SONET transmission equipment. This type of connectivity is achieved without the need for additional equipment.