Cisco 7911g sip registiration with another pbx

[moustafa123]

we have cisco ip phone 7911g and we want to register it with Aasta mx-one tse we already change cofiguration file of the set from sccp to sip,and we found the following in tftp server log:

Connection received from 10.0.0.125 on port 49152 [30/03 12:41:15.327]
Read request for file <CTLSEPE8BA70065383.tlv>. Mode octet [30/03 12:41:15.328]
File <CTLSEPE8BA70065383.tlv> : error 2 in system call CreateFile The system cannot find the file specified. [30/03 12:41:15.328]
Connection received from 10.0.0.125 on port 49153 [30/03 12:41:15.481]
Read request for file <SEPE8BA70065383.cnf.xml>. Mode octet [30/03 12:41:15.482]
Using local port 53698 [30/03 12:41:15.482]
<SEPE8BA70065383.cnf.xml>: sent 14 blks, 7080 bytes in 0 s. 0 blk resent [30/03 12:41:15.515]
Connection received from 10.0.0.125 on port 49154 [30/03 12:41:20.124]
Read request for file <US/tc-sip.jar>. Mode octet [30/03 12:41:20.124]
File <US\tc-sip.jar> : error 3 in system call CreateFile The system cannot find the path specified. [30/03 12:41:20.125]
Connection received from 10.0.0.125 on port 49155 [30/03 12:41:20.397]
Read request for file </g3-tones.xml>. Mode octet [30/03 12:41:20.397]
File <\g3-tones.xml> : error 2 in system call CreateFile The system cannot find the file specified. [30/03 12:41:20.398]
Connection received from 10.0.0.125 on port 49157 [30/03 12:41:25.831]
Read request for file <dialplan.xml>. Mode octet [30/03 12:41:25.832]
Using local port 65097 [30/03 12:41:25.832]
<dialplan.xml>: sent 2 blks, 923 bytes in 0 s. 0 blk resent [30/03 12:41:25.846]
Connection received from 10.0.0.125 on port 49152 [30/03 12:52:39.133]
Read request for file <CTLSEPE8BA70065383.tlv>. Mode octet [30/03 12:52:39.133]
File <CTLSEPE8BA70065383.tlv> : error 2 in system call CreateFile The system cannot find the file specified. [30/03 12:52:39.155]
Connection received from 10.0.0.125 on port 49153 [30/03 12:52:39.279]
Read request for file <SEPE8BA70065383.cnf.xml>. Mode octet [30/03 12:52:39.280]
Using local port 56933 [30/03 12:52:39.281]
<SEPE8BA70065383.cnf.xml>: sent 14 blks, 7080 bytes in 0 s. 0 blk resent [30/03 12:52:39.350]
Connection received from 10.0.0.125 on port 49154 [30/03 12:52:43.528]
Read request for file <US/tc-sip.jar>. Mode octet [30/03 12:52:43.529]
File <US\tc-sip.jar> : error 3 in system call CreateFile The system cannot find the path specified. [30/03 12:52:43.529]
Connection received from 10.0.0.125 on port 49155 [30/03 12:52:43.738]
Read request for file </g3-tones.xml>. Mode octet [30/03 12:52:43.739]
File <\g3-tones.xml> : error 2 in system call CreateFile The system cannot find the file specified. [30/03 12:52:43.739]
Connection received from 10.0.0.125 on port 49157 [30/03 12:52:46.701]
Read request for file <dialplan.xml>. Mode octet [30/03 12:52:46.702]
Using local port 56936 [30/03 12:52:46.704]
<dialplan.xml>: sent 2 blks, 923 bytes in 0 s. 0 blk resent [30/03 12:52:46.745]

Now the phone is registered but we cannot make or receive calls Please advise