# Asterisk Project : chan_dahdi Channel Variables

Added by mdavenport , edited by mdavenport on Aug 31, 2010

- ${ANI2} * - The ANI2 Code provided by the network on the incoming call. (ie, Code 29 identifies call as a Prison/Inmate Call)
- ${CALLTYPE} * - Type of call (Speech, Digital, etc)
- ${CALLEDTON} * - Type of number for incoming PRI extension i.e. 0=unknown, 1=international, 2=domestic, 3=net_specific, 4=subscriber, 6=abbreviated, 7=reserved
- ${CALLINGSUBADDR} * - Caller's PRI Subaddress
- ${FAXEXTEN} * - The extension called before being redirected to "fax"
- ${PRIREDIRECTREASON} * - Reason for redirect, if a call was directed
- ${SMDI_VM_TYPE} * - When an call is received with an SMDI message, the 'type' of message 'b' or 'u'