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-rw-r--r--configs/sip.conf.sample10
1 files changed, 6 insertions, 4 deletions
diff --git a/configs/sip.conf.sample b/configs/sip.conf.sample
index a769f189e..1bf3c1bec 100644
--- a/configs/sip.conf.sample
+++ b/configs/sip.conf.sample
@@ -391,11 +391,13 @@ srvlookup=yes ; Enable DNS SRV lookups on outbound calls
; Setting this to yes, enables T.38 fax (UDPTL) passthrough on SIP to SIP calls, provided
; both parties have T38 support enabled in their Asterisk configuration
; This has to be enabled in the general section for all devices to work. You can then
-; disable it on a per device basis.
+; disable it on a per device basis.
+; T.38 faxing only works in SIP to SIP calls. It defaults to off.
;
-; T.38 faxing only works in SIP to SIP calls, with no local or agent channel being used.
-;
-; t38pt_udptl = yes ; Default false
+; t38pt_udptl = yes ; Enables T.38 with FEC error correction.
+; t38pt_udptl = yes,fec ; Enables T.38 with FEC error correction.
+; t38pt_udptl = yes,redundancy ; Enables T.38 with redundancy error correction.
+; t38pt_udptl = yes,none ; Enables T.38 with no error correction.
;
;----------------------------------------- OUTBOUND SIP REGISTRATIONS ------------------------
; Asterisk can register as a SIP user agent to a SIP proxy (provider)