I'm trying to specify the "OK" at the end of a modem's AT Command responsed as the EndString for a DataPacket.

So I specified the EndString as "rnOKrn", but this failed to trigger - even though the trace shows that sequence was received:

0020.881  Packet    Enable        00000000  Packet:ApdDataPacketGsmCmgr
0020.881  Packet    StartStr      00000000  +CMGR:[20]
0020.881  Packet    Waiting       00000000  Packet:ApdDataPacketGsmCmgr
0020.881  Packet    EndStr        00000000  [0D][0A]OK[0D][0A]
0020.881  Trigger   Status        00000035  
0020.881  TrDatChg  Timer         00000038  [01][00][00][00]
:
:
0021.053  Dispatch  ReadCom       00000001  [0D]
0021.053  Trigger   Avail         00000001  
0021.054  Dispatch  ReadCom       00000001  [0A]
0021.054  Trigger   Avail         00000001  
0021.055  Dispatch  ReadCom       00000001  [0D]
0021.055  Trigger   Avail         00000001  
0021.056  Dispatch  ReadCom       00000001  [0A]
0021.056  Trigger   Avail         00000001  
0021.057  Dispatch  ReadCom       00000001  O
0021.057  Trigger   Avail         00000001  
0021.058  Dispatch  ReadCom       00000001  K
0021.058  Trigger   Avail         00000001  
0021.059  Dispatch  ReadCom       00000001  [0D]
0021.059  Trigger   Avail         00000001  
0021.060  Dispatch  ReadCom       00000001  [0A]
0021.060  Trigger   Avail         00000001  
0021.060  TrDatChg  Timer         00000008  Deactivated
0021.060  Packet    Idle          00000000  Packet:ApdDataPacketGsmCmgr
0021.060  Packet    Disable       00000000  Packet:ApdDataPacketGsmCmgr
0021.060  Packet    StringPacket  00000000  Packet:ApdDataPacketGsmCmgr

If I change the EndString to "rnrnOKrn", it does trigger!

So why can't it "see" the original (sub-)string, and trigger on that?

I think I've seen this before - there seems to be something about the CRLF end-of-line sequence...