chan_pjsip: DTMF Mode auto_info fallback lead to both inband and info

When the dtmf_mode on an endpoint is configured as "auto_info"
Asterisk will produce an inband DTMF tone alongside an INFO
message when sending DTMF.

ASTERISK-28371

Change-Id: I1380b82f006e110a1b83fbb50c9873edd13a5d9a

diff --git a/channels/chan_pjsip.c b/channels/chan_pjsip.c
index e5d5aea12b4cb530a6c331303b399a698054c431..9c27f33b11d5f5993139927de387e626a229e029 100644 (file)
--- a/channels/chan_pjsip.c
+++ b/channels/chan_pjsip.c
@@ -2022,7 +2022,7 @@ static int chan_pjsip_digit_begin(struct ast_channel *chan, char digit)
                break;
        case AST_SIP_DTMF_AUTO_INFO:
                if (!media || !media->rtp || (ast_rtp_instance_dtmf_mode_get(media->rtp) == AST_RTP_DTMF_MODE_NONE)) {
-                       return -1;
+                       return 0;
                }
                ast_rtp_instance_dtmf_begin(media->rtp, digit);
                break;