Specifications

Chapter 16 – Audio Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 273
16.20 AT^SRTC Ring Tone Configuration
Description: The AT^SRTC read command returns the current <type> and current <volume>. It can be used
while test playback is off or on. In the latter case, see execute command for details.
The AT^SRTC execute command is intended for testing. It starts to play a melody from the
audio output currently selected with AT^SNFS. To deactivate test playback use AT^SRTC again.
During test playback, you can enter the write command to select another melody and adjust the
volume. Also, you can enter the read command to check the type and volume of the current ring
tone and to view the status of playback (on / off).
The AT^SRTC write command chooses the type and volume of ring tones. The selected <type>
and <volume> are stored in the non-volatile Flash memory. The only exception is <type>=0
which is not stored because it is intended only to quickly mute the tone currently played. So
<type>=0 only stops immediately the audible ring tone, but does not terminate the RING URC.
Syntax: Test Command: AT^SRTC=?
Response: ^SRTC:(list of supported) <type>s, (list of supported) <volume>s
OK
Read Command: AT^SRTC?
Response: ^SRTC: <type>, <volume>, <status>
OK
ERROR
+CME: <err>ERROR
Exec Command: AT^SRTC
Response: OK
ERROR
+CME: <err>ERROR
Write Command: AT^SRTC=[<type>][, <volume>]
Response: ^SRTC: <type>, <volume>
OK
ERROR
+CME: <err>ERROR
Parameters:
<type>
Type of ring tone. You have a choice of 7 different ring tones and melodies. All will be played from the audio
output selected with the AT^SNFS command. <type>=0 is only intended for muting.
0 Mutes the currently played tone immediately.
1 Sequence 1
2 Sequence 2
3 Sequence 3
4 Sequence 4
5 Sequence 5
6 Sequence 6
7 Sequence 7
<volume>
Volume of ring tone, varies from low to high
0 Mute
1 Very low
2 Identical with 1
3 Low
4 Identical with 3
5 Middle
6 Identical with 5
7 High
<status>
Status of test ringing. Indicates whether or not a melody is currently being played back for testing
0 Switched off
1 Switched on