Filter
Top Products
Chapter 4 – Voice Commands
Multi-Tech Systems, Inc. SocketModem MT5634SMIxx Reference Guide (S000263C) 111
Command: +VLS=<label> Select Analog Source/Destination
Result Codes: OK if command accepted; ERROR if the <label> parameter is out of range or if the
modem cannot service the <label> parameter requested.
Description: +VLS= causes the modem to select one or more source and destination devices for the
analog data to be transmitted. The parameter <label> identifies each of the supported
analog source/destination hardware devices. Codes, called "primitives", are provided to
describe which voice I/O device(s) are components in a possible hardware configuration.
The codes are grouped to help define and label 16 common hardware configurations.
Each code, except "L" and "T" is followed by an ASCII 0 code (20 hex). Two codes can
be concatenated to define a possible analog source/destination hardware configuration.
Code
Description
L Local phone (no number code)
T Telco line (no number code)
M0 Internal microphone
M1 External microphone
S0 Internal speaker (requires squelch on any microphone activity)
S1 External speaker (requires squelch on any microphone activity)
H0 External microphone and speaker combination (handset or headset)
Zn Manufacturer specific device (n>0)
Mn Manufacturer specific extension (n>1)
Sn Manufacturer specific extension (n>1)
Hn Manufacturer specific extension (n>0)
The list below contains 16 commonly used hardware configurations, label, and codes
used to select each configuration.
<label> Code(s) Description
0 none Modem on-hook. Local phone connected to Telco.
1 T Modem off-hook, and connected to Telco. Local phone provided with
power to detect hook condition.
2 L Modem off-hook. Local phone connected to modem.
3 LT Modem off-hook. Local phone connected to Telco. Modem connected to
Telco.
4 S Internal speaker connected to the modem. Modem is on-hook. Local
phone connected to Telco.
5 ST Internal speaker connected to Telco. Modem off-hook. Modem
connected to Telco. Local phone provided with power to detect hook
condition.
6 M Internal microphone connected to modem. Modem is on-hook. Local
phone connected to Telco.
7 MST Internal microphone and internal speaker connected to Telco.
Squelching active. Modem is off-hook, and connected to Telco. Local
phone provided with power to detect hook condition.
8 S1 External speaker connected to modem. Modem is on-hook. Local phone
connected to Telco.
9 S1T External speaker connected to Telco. Modem is off-hook and connected
to Telco. Local phone provided with power to detect hook condition.
10 MS1T Internal microphone and external speaker connected to Telco.
Squelching active. Modem is off-hook, and connected to Telco. Local
phone provided with power to detect hook condition.
11 M1 External microphone connected to modem. Modem is off-hook. Local
phone connected to Telco.
12 M1ST External microphone and internal speaker connected to Telco.
Squelching active. Modem is off-hook, and connected to Telco.
Local phone provided with power to detect hook condition.
13 M1S1T External microphone and external speaker connected to Telco.
Squelching active. Modem is off-hook, and connected to Telco. Local
phone provided with power to detect hook condition.
14 H External microphone and speaker combination (handset or headset)
connected to modem. Modem is off-hook. Local phone connected to
Telco.