res_pjsip: Add rtp_keepalive to sample config file.

Change-Id: I5f62d0c5684f8b2335f9f8ac2d79ee04fbdafb19

diff --git a/configs/samples/pjsip.conf.sample b/configs/samples/pjsip.conf.sample
index 239efda59485a939ff8f25ef346f01a9b1b7a443..6afe053c3885732c693c0951d7262dfffc36c38f 100644 (file)
--- a/configs/samples/pjsip.conf.sample
+++ b/configs/samples/pjsip.conf.sample
@@ -732,6 +732,9 @@
                 ; byte tags (default: "no")
 ;set_var=       ; Variable set on a channel involving the endpoint. For multiple
                ; channel variables specify multiple 'set_var'(s)
+;rtp_keepalive= ; Interval, in seconds, between comfort noise RTP packets if
+                ; RTP is not flowing. This setting is useful for ensuring that
+                ; holes in NATs and firewalls are kept open throughout a call.
 
 ;==========================AUTH SECTION OPTIONS=========================
 ;[auth]