voip*CLI> core show function 
AGENT                ARRAY                BASE64_DECODE        BASE64_ENCODE        BLACKLIST            CALLERID             
CDR                  CHANNEL              CHECK_MD5            CHECKSIPDOMAIN       CUT                  DB                   
DB_DELETE            DB_EXISTS            DUNDILOOKUP          ENUMLOOKUP           ENV                  EVAL                 
EXISTS               FIELDQTY             FILTER               GLOBAL               GROUP                GROUP_COUNT          
GROUP_LIST           GROUP_MATCH_COUNT    IAXPEER              IF                   IFTIME               ISNULL               
KEYPADHASH           LANGUAGE             LEN                  MATH                 MD5                  MUSICCLASS           
QUEUE_MEMBER_COUNT   QUEUE_MEMBER_LIST    QUEUE_WAITING_COUNT  QUEUEAGENTCOUNT      QUOTE                RAND                 
REALTIME             REGEX                SET                  SHA1                 SIP_HEADER           SIPCHANINFO          
SIPPEER              SORT                 SPEECH               SPEECH_ENGINE        SPEECH_GRAMMAR       SPEECH_RESULTS_TYPE  
SPEECH_SCORE         SPEECH_TEXT          SPRINTF              STAT                 STRFTIME             STRPTIME             
TIMEOUT              TXTCIDNAME           URIDECODE            URIENCODE            VMCOUNT              
voip*CLI> core show function