Touch-tone and call progress engineering specifications

Detailed Engineering Specifications for Tone and Call Progress

Listed below are the specifications for call progress and touch-tone on the PowerVoice 4 (PV4)card. (D/4PCI & Dialog 4*)

DTMF digits 0 to 9, *, #, A, B, C, D per Bellcore LSSGR Sec 6
Dynamic range Programmable, default set at -36 dBm to +0 dBm per tone
Minimum tone duration 40 ms, can be increased with software configuration
Interdigit timing Detects like digits with a 40 ms interdigit delay.
Detects different digits with a 0 ms interdigit delay.
Twist and frequency variation Meets Bellcore LSSGR Sec 6 and EIA 464requirements
Acceptable twist 10 dB
Signal/noise ratio 10 dB (referenced to lowest amplitude tone)
Noise tolerance Meets Bellcore LSSGR Sec 6 and EIA 464 requirements for
Gaussian, impulse, and power line noise tolerance
Cut through Detects down to -36 dBm per tone into 600 Ohm load impedance
Tone type Programmable for single or dual
Max. number of tones Application dependent
Frequency range Programmable within 300 Hz to 3500 Hz
Max. frequency deviation Programmable in 5 Hz increments
Frequency resolution Less than 5 Hz. Note: certain limitations exist for dual tones closer than 60 Hz apart.
Timing Programmable cadence qualifier, in 10 ms increments
Dynamic range Programmable, default set at -36 dBm to +0 dBm per tone

MF digits 0 to 9, KP, ST, ST1, ST2, ST3 per Bellcore LSSGR Sec 6, TR-NWT-000506 and CCITT Q.321
Transmit level Complies with Bellcore LSSGR Sec 6, TR-NWT-000506
Signaling mechanism Complies with Bellcore LSSGR Sec 6, TR-NWT-000506
Dynamic range for detection -25 dBm to -1 dBm per tone
Acceptable twist 6 dB
Acceptable freq. variation Less than ±1 Hz

Busy tone detection Default setting designed to detect 74 out of 76 unique busy/congestion tones used in 97 countries as specified by CCITT Rec E., Suppl #2.
Default uses both frequency and cadence detection.
Application can select frequency only for faster detection in specific environments.
Ringback detection Default setting designed to detect 83 out of 87 unique ringback tones used in 96 countries as specified by CCITT Rec E., Suppl #2.
Uses both frequency and cadence detection.
Positive Voice Detection - Accuracy >98% based on tests on a database of real world calls
Positive Voice Detection speed
Detects voice in as little as 1/10th of a second.
Positive Answering Machine Detection - accuracy 80 to 90% based on application and environment
Fax/modem detection Preprogrammed
Intercept detection Detects entire sequence of the North American tritone.
Other SIT sequences can be programmed.
Dial tone detection before dialing Application enable/disable. Supports up to three different user-definable dial tones.
Programmable dialtone drop-out debouncing.

DTMF digits 0 to 9, *, #, A, B, C, D; 16 digits per Bellcore LSSGR Sec 6, TR-NWT-000506
MF digits 0 to 9, KP, ST, ST1, ST2, ST3
Frequency variation ±0.5% of nominal frequency
Rate 10 digits/s max., configurable by parameter
Level -5 dBm per tone, nominal, configurable by parameter

Applicable standards Bellcore TR-TSY-000030
Bellcore TR-TSY-000031
TAS T5 PSTN1 ACLIP: 1994 (Singapore)
British Telecom SIN 242 (Issue 01)
British Telecom SIN 227 (Issue 01)
Japan NTT CLIP
Modem standard Bell 202 or V.23, serial 1200 b/s (simplex FSK signaling)
Receive sensitivity -48 dBm to -1 dBm
Noise tolerance Minimum 18 dB SNR over 0 dBm to -48 dBm dynamic range forerror-free performance
Data formats Single Data Message (SDM) and Multiple Data Message (MDM) formats via API calls and commands
Line impedance 600 Ohm for D/4PCI.
Message formats ASCII or binary SDM, MDM message content

*D/4PCI & Dialog 4 are registered trademarks of Dialogic Corporation