Operating Manual 6175.4760.02 – 01 3.81
M3SR Series 4100 Menu VoIP 2/2 (3062)
Softkey Description Possible Values
Navigate to the previous menu (VoIP 1/2, see 
sect. 3.4.6 Menu VoIP 1/2 (3061)).
Open an editor to change 
the Tx URI whic h is required 
to set the radio into ED137 
mode.
 
Default: TX Up to 64 characters
• a to z
• A to Z
• _
Open an editor to change 
the Rx URI which is re-
quired to set the radio into 
ED137 mode.
Default: RX Up to 64 characters
• a to z
• A to Z
•_
Open an editor to change 
the lo w e st  port  w hich can  b e  
used by the radio for the 
RTP datastream.
Select the size with the 
knob or with the numeric 
keypad.
Default: 4000 0 to 65535
Open an editor to change 
the highest port which can 
be used by the radio for the 
RTP datastream.
Select the size with the 
knob or with the numeric 
keypad.
Default: 65535 0 to 65535
Open a listbox and use the 
knob to select the mode of 
the VoIP service.
Press 'ENT' to confirm.
Default: ED137+SIP OFF
Disable VoIP service.
ED137+SIP
Accepts both, ED137 and SIP 
calls.
ED137B only
Rejects SIP calls which are 
not ED137B.
Open an editor to change 
the jitter buffer size.
Select the size with the 
knob or with the numeric 
keypad.
Default: 60 ms 0 to 200 ms in steps of 20 ms