Specifications
Chapter 4 – Voice Commands 
Multi-Tech Systems, Inc. SocketModem MT5600SMI/MT5656SMI Reference Guide (S000306B)  105 
Label  Primitives  Description  +VTX  +VRX  +VSP=1 
Local phone connected to the line. 
9  S1T  External Speaker connected to the line. DCE off-hook. DCE 
connected to the line. Local phone provided with power to 
detect hook condition. 
X X   
10  MS1T  Internal microphone and External Speaker connected to the 
line. DCE off-hook. DCE connected to the line. Local phone 
provided with power to detect hook condition. 
  X 
11  M1  External Microphone connected to the DCE. DCE on-hook. 
Local phone connected to the line. 
 X   
12  M1ST  External Microphone and Internal Speaker connected to the 
line. DCE off-hook. DCE connected to the line. Local phone 
provided with power to detect hook condition. 
  X 
13  M1S1T  External Microphone and External Speaker connected to the 
line. DCE off-hook. DCE connected to the line. Local phone 
provided with power to detect hook condition. 
  X 
14  H  External Microphone and Speaker combination (handset or 
headset) connected to the DCE. DCE on-hook. Local phone 
connected to the line. 
X X   
15  HT  External Microphone and Speaker combination (handset or 
headset) connected to the line. DCE off-hook. DCE 
connected to the line. Local phone provided with power to 
detect hook condition. 
X X   
16  MS  MS Internal Microphone and Internal Speaker connected to 
DCE. 
17  M1S  MS1 Internal Microphone and External Speaker connected 
to DCE. 
18  MS1  External Microphone and Internal Speaker connected to 
DCE. 
19  M1S1  External Microphone and External Speaker connected to 
DCE. 
Primitives (Column 2): 
L Local Phone. 
T Telephone Line. 
M Internal Microphone. 
M1 External Microphone. 
S Internal Speaker. 
S1 External Speaker. 
H External Microphone and Speaker combination (handset or headset). 
Note: All label options in this table may not be supported by the product; see +VLS command 










