Hello list, I'm testing this dialplan Block: <extension name="hold_music"> <condition field="destination_number" expression="^9664$"/> <condition field="${rtp_has_crypto}" expression="^(AES_CM_128_HMAC_SHA1_32|AES_CM_128_HMAC_SHA1_80)$"> <action application="answer"/> <action application="execute_extension" data="is_secure XML features"/> <action application="playback" data="$${hold_music}"/> <anti-action application="set" data="zrtp_secure_media=true"/> <anti-action application="answer"/> <anti-action application="playback" data="silence_stream://2000"/> <anti-action application="execute_extension" data="is_zrtp_secure XML features"/> <anti-action application="playback" data="$${hold_music}"/> </condition> </extension> using Bria Softphone; his SDP look like: a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:BtJ/e81Ed/6DMngVpHxmi+F5WHZQt89R9V1PYv27 a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:BtJ/e81Ed/6DMngVpHxmi+F5WHZQt89R9V1PYv27 Why don't match with: ^(AES_CM_128_HMAC_SHA1_32|AES_CM_128_HMAC_SHA1_80)$ Dialplan: sofia/internal/1003@144.202.15.148 Regex (FAIL) [hold_music] ${rtp_has_crypto}() =~ /^(AES_CM_128_HMAC_SHA1_32|AES_CM_128_HMAC_SHA1_80)$/ break=on-false Thank you Regards -- --- I'm SoCIaL, MayBe