SIP to SIP local calling Problem

hi
while dialing SIP to SIP local extension i m getting following error any body can help to fix it out....thanks


-- SIP Seeding peer from astdb: '71234' at 71234@192.168.2.75:5061 for 1800
-- Saved useragent "X-Lite release 1105d" for peer 71234
-- Executing Macro("SIP/71234-0822f9f0", "stdexten|71235") in new stack
-- Executing AGI("SIP/71234-0822f9f0", "astlocal.agi|71235") in new stack
-- Launched AGI Script /var/lib/asterisk/agi-bin/astlocal.agi
AGI Tx >> agi_request: astlocal.agi
AGI Tx >> agi_channel: SIP/71234-0822f9f0
AGI Tx >> agi_language: en
AGI Tx >> agi_type: SIP
AGI Tx >> agi_uniqueid: 1190196684.0
AGI Tx >> agi_callerid: 71234
AGI Tx >> agi_calleridname: 71234
AGI Tx >> agi_callingpres: 0
AGI Tx >> agi_callingani2: 0
AGI Tx >> agi_callington: 0
AGI Tx >> agi_callingtns: 0
AGI Tx >> agi_dnid: 71235
AGI Tx >> agi_rdnis: unknown
AGI Tx >> agi_context: macro-stdexten
AGI Tx >> agi_extension: s
AGI Tx >> agi_priority: 1
AGI Tx >> agi_enhanced: 0.0
AGI Tx >> agi_accountcode:
AGI Tx >>
Use of uninitialized value in string eq at /var/lib/asterisk/agi-bin/astlocal.agi line 113, line 19.
Use of uninitialized value in concatenation (.) or string at /var/lib/asterisk/agi-bin/astlocal.agi line 117, line 19.
Use of uninitialized value in concatenation (.) or string at /var/lib/asterisk/agi-bin/astlocal.agi line 117, line 19.
Use of uninitialized value in concatenation (.) or string at /var/lib/asterisk/agi-bin/astlocal.agi line 81, line 19.
Use of uninitialized value in concatenation (.) or string at /var/lib/asterisk/agi-bin/astlocal.agi line 305, line 19.
Use of uninitialized value in string eq at /var/lib/asterisk/agi-bin/astlocal.agi line 308, line 19.
Use of uninitialized value in concatenation (.) or string at /var/lib/asterisk/agi-bin/astlocal.agi line 312, line 19.
AGI Rx > 200 result=0
Use of uninitialized value in string eq at /var/lib/asterisk/agi-bin/astlocal.agi line 315, line 20.
AGI Rx > 200 result=0
BLINDTRANSFER: 0
Use of uninitialized value in string eq at /var/lib/asterisk/agi-bin/astlocal.agi line 341, line 21.
AGI Rx > 200 result=1
-- AGI Script astlocal.agi completed, returning 0
-- Executing Dial("SIP/71234-0822f9f0", "|20") in new stack
Sep 19 15:11:24 WARNING[4367]: app_dial.c:814 dial_exec_full: Dial requires an argument (technology/number)
== Spawn extension (macro-stdexten, s, 2) exited non-zero on 'SIP/71234-0822f9f0' in macro 'stdexten'
== Spawn extension (macro-stdexten, s, 2) exited non-zero on 'SIP/71234-0822f9f0'