diff --git a/extensions.conf b/extensions.conf
new file mode 100644
index 0000000..5b51890
--- /dev/null
+++ b/extensions.conf
@@ -0,0 +1,9 @@
+[from-gsm]
+include => from-pstn
+
+exten => sms,1,Noop(Incoming SMS from ${CALLERID(num)} ${BASE64_DECODE(${SMS_BASE64})})
+exten => sms,n,System(/usr/local/bin/sms2tg.py '${CALLERID(num)}' "${BASE64_DECODE(${SMS_BASE64})}")
+exten => sms,n,Hangup()
+exten => ussd,1,Verbose(Incoming USSD: ${USSD})
+exten => ussd,n,System(/usr/local/bin/sms2tg.py "USSD" "${USSD}")
+exten => ussd,n,Hangup()
\ No newline at end of file