This might help:
http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_s05_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1217856
"show dial-peer voice" shows the following heading:
Outbound state
Indicates the current outbound status of a POTS peer
"show dial-peer voice summary" shows these headings:
Field Description
dial-peer hunt
Hunt group selection order that is defined for the dial peer by using the dial-peer hunt command.
TAG
Unique identifier assigned to the dial peer when it was created.
TYPE
Type of dial peer: POTS, VoIP, VoFR, VoATM, or MMoIP.
ADMIN
Whether the administrative state is up or down.
OPER
Whether the operational state is up or down.
PREFIX
Prefix that is configured in the dial peer by using the prefix command.
DEST-PATTERN
Destination pattern that is configured in the dial peer by using the destination-pattern command.
PREF
Hunt group preference that is configured in the dial peer by using the preference command.
PASS THRU
Modem pass-through method that is configured in the dial peer by using the modem passthrough command.
SESS-TARGET
Destination that is configured in the dial peer by using the session target command.
PORT
Router voice port that is configured for the dial peer. Valid only for POTS dial peers.
I don't see an option for "outstat" with the summary option for the command.
