[Koha] unable Fire up the SIPServer

[TIN JUN SIANG郑俊祥]

Dear,

when i tried to fire up the sip server with the command below
 perl C4/SIP/SIPServer.pm C4/SIP/SIPconfig.xml &

or with this command

perl -I./ ./SIPServer.pm ./SIPServer.xml

i get the error message as below:

 a Can't locate C4/Auth.pm in @INC (@INC contains:
/usr/share/koha/lib/C4/SIP ./ /etc/perl /usr/local/lib/perl/5.14.2
/usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5
/usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at
/usr/share/koha/lib/C4/SIP/Sip/MsgType.pm line 20.
BEGIN failed--compilation aborted at
/usr/share/koha/lib/C4/SIP/Sip/MsgType.pm line 20.
Compilation failed in require at ./SIPServer.pm line 19.
BEGIN failed--compilation aborted at ./SIPServer.pm line 19.

sorry for copying all the msg here, but i cannot tell which part is more
important.

thanks in advance.