diff --git a/channels/chan_sip.c b/channels/chan_sip.c index 0b2b26c15b9760ff94d53579858d0a6e8458dc21..e95339342931d53fd10c4610b021646216ebeb29 100644 --- a/channels/chan_sip.c +++ b/channels/chan_sip.c @@ -20062,7 +20062,7 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int required = get_header(req, "Require"); if (!ast_strlen_zero(required)) { required_profile = parse_sip_options(NULL, required); - if (required_profile && required_profile != SIP_OPT_REPLACES && required_profile != SIP_OPT_TIMER) { + if (required_profile && !(required_profile & (SIP_OPT_REPLACES | SIP_OPT_TIMER))) { /* At this point we only support REPLACES and Session-Timer */ transmit_response_with_unsupported(p, "420 Bad extension (unsupported)", req, required); ast_log(LOG_WARNING, "Received SIP INVITE with unsupported required extension: %s\n", required);