Caller Identification (CLI or Caller-ID)

Caller Identification (also known as Caller-ID ) is a method of transmitting the information of the caller to the called subscriber via a burst of FSK or DTMF data during the On-hook/Off-hook state of a Telephony Equipment. The On-hook transmission of CLI is through FSK or DTMF burst known as type 1 where as off-hook transmission is with FSK burst know as type 2.

Technical Specification

• Transmission
  • FSK and DTMF Caller ID transmission formats for off hook operation as per ETS 300 659-1 and 659-2
• Reception
  • Detection of the dual tone alerting signal as specified in ETS 300 778 - 1 for on hook data reception.
  • Detection of the dual tone alerting signal as specified in ETS 300 778 - 2 for off hook data reception. (Both DT-AS specified are same with difference only in the signaling levels).
  • Demodulating the FSK data as specified in ETS 300 778 - 2 for off hook operation.
• Supports single data message format (SDMF) and multiple data message format (MDMF)
• Conforms to ETSI recommendation: ETS 300 659-1 & -2 (Europe) specification
• Conforms to BellCore GR-30-CORE, including Bell 202 specification
• Conforms to ITU-T V.23 specification
• Re-entrant Multi-channel Implementation
• C Callable APIs

Applications

• Telecommunication
• Voice over Packet systems
• Automatic Dialers

Platforms

• Currently supported on TI C64x™ (TMS320C64xx™) and TI C64x+™/DaVinci™ (DM644x™)
• For further details contact mkt@ittiam.com