ShoreTel TMSNcc Log Info

Great informational article regarding ShoreTel TMSNcc logs: http://www.netdungeon.com/articles/how-decipher-tmsncclog

Call Code Parameters:

C-CE	Call Creation Event	Call Initiation.
L-CE	Leg Create Event	Follows a C-CE; Internal Transfers
L-IE	Leg Info Event	Provides information on other parties in the call.
C-SE	Call State Event	State of call in progress; RingBack, Offering, etc.
L-SE	Leg State Event	Follows a C-SE to inform the leg state changes.
L-DE	Leg Destroy Event	Call tear down; Leg is destroyed.
C-DE	Call Destroy Event	Call Destroyed by user or system hung up.
G-MST	Media State Event	Media states for the terminated call leg.

Example from the article linked above:

Key:

Trunk Call Leg To PSTN	40000001
Internal Call Leg	20000023
Call GUID	00020000-1aae-4f05-9cce-0010491e1b95
PBX Responding to Party	ncc_media_ctl

Packet Information: (s:1, r:378, l:0),(j:0,u:0,o:0)

The above packet information lists sent and recieved packets, and jitter. This is very useful in understanding why calls fail. In many cases we will see issues with jitter readjustments during problem or dropped calls. The s:1 indicates 1 packet was sent, the r:378 indicates 378 packets were recieved. The second set of parentheses (j:0,u:0,o:0) describes the jitter buffer, and in this case was adjusted 0 times. This is more of an ideal scenario as problem calls will vary in their jitter and packet amounts.