MT88E41

• Calling Number Delivery (CND), Calling Name Delivery (CNAM) and Calling Identity on Call Waiting (CIDCW) features of Bellcore CLASSSM service
• Feature phones
• Phone sets, adjunct boxes
• FAX machines
• Telephone answering machines
• Database query systems
• Battery powered applications

The MT88E41 Extended Voltage Calling Number Identification Circuit (ECNIC) is a CMOS integrated circuit providing an interface to various calling line information delivery services that utilize 1200 baud BELL 202 or CCITT V.23 FSK voiceband data transmission schemes. The ECNIC MT88E41 receives and demodulates the signal and outputs data into a simple 3-wire serial interface. Typically, the FSK modulated data containing information on the calling line is sent before alerting the called party or during the silent interval between the first and second ring using either CCITT V.23 recommendations or Bell 202 specifications. The ECNIC MT88E41 accepts and demodulates both CCITT V.23 and BELL 202 signals. Along with serial data and clock, the ECNIC provides a data ready signal to indicate the reception of every 8-bit character sent from the Central