Does anyone know what the three Lost counters are for in the "sh call act voice br" command:

RRHB-VXR01#sh call act v br | beg 1608

1608 : 591028919hs.1 +513 pid:1 Answer 2027125556 active

dur 00:01:58 tx:5192/103840 rx:5892/117840

Tele 3/1:23:2932499: tx:117890/117890/0ms g729r8 noise:0 acom:16 i/0:-39/-53 dBm

1608 : 591028919hs.2 +513 pid:219 Originate 219 active

dur 00:01:58 tx:5464/109280 rx:5192/103840

IP 206.118.10.240:32544 rtt:0ms pl:80580/8570ms lost:0/430/213 delay:150/70/150ms g729r8

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See that lost was "lost:0/430/213"

What is the significance of each of the three values?