Problem sending DTMF signal through ooh323 trunk

When I give the ‘ooh323 show peer HQ’ in CLI I get:
Name: HQ
FastStart/H.245 Tunneling:no,no
Format Prefs: (alaw:60)
DTMF Mode: rfc2833
DTMF Codec: 101
T.38 Mode: faxgw/chan_sip compatible
AccountCode: ast_h323
AMA flags: Unknown
IP:Port: 192.168.202.252:1720
OutgoingLimit: 0
rtptimeout: 60

BUT when I make a call I get in /var/log/asterisk/h323_log:
15:42:27:221 Processing MakeCall command ooh323c_o_2
15:42:27:221 ERROR: Empty calllist - ooFindCallByToken failed
15:42:27:221 Created a new call (outgoing, ooh323c_o_2)
15:42:27:235 INFO: FinCall returned 2aaad00d2178 for call: ooh323c_o_2
15:42:27:235 INFO: FinCall returned 2aaad00d2178 for call: ooh323c_o_2
15:42:27:235 INFO: create cmd connect for call: 2aaad00d2178
15:42:27:235 Added local alias 570 to call. (outgoing, ooh323c_o_2)
15:42:27:235 Added remote alias 114 to call. (outgoing, ooh323c_o_2)
15:42:27:235 Enabled RTP/CISCO DTMF capability for (outgoing, ooh323c_o_2)
15:42:27:235 Enabled RFC2833 DTMF capability for (outgoing, ooh323c_o_2)
15:42:27:235 Dtmf mode set to H.245(alphanumeric) for (outgoing, ooh323c_o_2)
15:42:27:235 Dtmf mode set to H.245(signal) for (outgoing, ooh323c_o_2)
15:42:27:235 Adding call specific capability OO_T38. (outgoing, ooh323c_o_2)
15:42:27:235 Adding call specific capability OO_G711ALAW64K. (outgoing, ooh323c_o_2)
15:42:27:235 Configured mediainfo for cap OO_G711ALAW64K (outgoing, ooh323c_o_2)
15:42:27:235 Configured mediainfo for cap OO_G711ALAW64K (outgoing, ooh323c_o_2)
15:42:27:235 Configured mediainfo for cap OO_T38 (outgoing, ooh323c_o_2)
15:42:27:235 Configured mediainfo for cap OO_T38 (outgoing, ooh323c_o_2)
15:42:27:241 Processing MakeCall command ooh323c_o_2
15:42:27:241 INFO: FinCall returned 2aaad00d2178 for call: ooh323c_o_2
15:42:27:241 Parsing destination 192.168.202.252:1720
15:42:27:241 Generated callRef 86
15:42:27:242 Trying to connect to remote endpoint(192.168.202.252:1720) to setup H2250 channel (outgoing, ooh323c_o_2)

What is the method that is used for DTMF? rfc2833 or H.245(signal) as finally mentioning in log?

many thanks