HP Comware 5 Debug Manual Vol 2
// CC sent a request to the Q931 module.
*0.4719813 Sysname-Comware Q931/8/Q931_Debug: Serial0/1/0:15
Q931->Q921 DL_I_Data_Req CES = 1
cr_length= 2 cr= 02 00 05 CONNECT_ACK
// The Q931 module sent an active message to Q921.
*0.4719813 Sysname-Comware Q931/8/Q931_Debug: Serial0/1/0:15
ISDN Layer 3 call state change: CS_CONNECT_REQUEST -> CS_ACTIVE
// The Q931 module turned from Connect request state to Active state.
*0.4719813 Sysname-Comware Q921/8/Q921_Debug: Serial0/1/0:15
Net Tx: Len=9 02 01 02 02 08 02 00 05 0F
Net Tx: sapi=00 tei=00 c/r=1 I ns=01 nr=01 p=0
*0.4719823 Sysname-Comware Q921/8/Q921_Debug: Serial0/1/0:15
Net Rx: Len=4 02 01 01 04
Net Rx: sapi=00 tei=00 c/r=1 RR nr=02 p/f=0
// The RR frame used by the Q921 module for maintaining the link.
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