Updtl.conf

Distro Discussion & Help
1

FreePBX 13.0.120 does not allow changes to updtl.conf but also does not allow settings to be modified in the GUI. Do I need to set the values in updtl_custom.conf or are the defaults enabled on the system already? Anything to do in Asterisk SIP settings?

e.g. SIP settings:
faxdetect=yes
T38 Pass-Through = Yes
t38pt_udptl=yes

udptl_custom.conf
udptlstart=4000
udptlend=4999
etc…

2

Add to the custom file. After ‘core reload’, confirm settings at the Asterisk CLI:

*CLI> udptl show config
UDPTL Global options
--------------------
udptlstart:      4000
udptlend:        4999
udptlfecentries: 0
udptlfecspan:    0
use_even_ports:  No
udptlchecksums: Yes
1 Like
3

That seems to be the default without adding anything to the custom file but faxing is pretty much hit or miss with these settings. I even have FaxPro installed (don’t know if that makes a difference)

SIP settings
T38 Pass-Through = yes

Fax config:
ECM = yes
min speed 9600
Max 14400

Are there any other values that need to be set in the GUI or conf files?

4

In my experience it doesn’t. Faxing is just hard to do once you get away from a carrier-class line.