Owner manual

V.22 bis Linux Softmodem for 73M1x22 MicroDAA User Guide UG_1x22_043
10 Rev. 1.5
G Guard Tone Selection

G0
No guard tone
G1 550Hz guard tone enabled
G2 1800Hz guard tone enabled
H Hook Control

H0
On-hook (hang up)
H1 Off-hook (connect to phone line)
I Identification
I0
Returns product identification code
I3 Returns firmware revision number
I4 Returns copyright notice
Returns TSC Softmodem information
J PTT test
J0
Stop J test in progress
J1 Transmit DTMF tones specified by registers S12 and S13
J2 Transmit Answer tone or Calling tone specified by register S13 and S27
J3 Transmit modulation specified by registers S14, S30 and S60
J4 Transmit silence (quiet mode)
J5 Wait (To set up the wait time use J5.[n]. [n] is in 1/10 ms)
J6 Detect CAS and DTMF tones off hook(requires host polling of register S65)*
J7
Analog Interface Test Mode: Loops back the TXAP-TXAN signal to RXA
through external components to check if everything is wired correctly. Returns
OK, or ERROR. Signal Levels are specified with S113, S114-S115.
J8
Goes off-hook and wait for CAS tone. If a CAS is detected, send an ack and
detect a US CID .
*An alt
ernate (preferred) method of detecting DTMF tones is available though usage of the
Caller ID DTMF detection mode. Refer to DTMF tones detection chapter at the end of this
document.