Log Record 1 2013-02-23 21:48:31 Sent SMS [SMSC:rock1] [SVC:playsms1] [ACT:] [BINF:] [FID:88] [META:] [from:xxxx] [to:971808339] [flags:-1:0:-1:-1:31] [msg:0:] [udh:0:]
Log record 2 2013-02-23 21:48:31 Receive DLR [SMSC:rock1] [SVC:playsms1] [ACT:] [BINF:] [FID:88] [META:] [from:xxxx] [to:971808339] [flags:-1:-1:-1:-1:8] [msg:4:ACK/] [udh:0:]
Log Record 3 2013-02-23 21:48:34 Receive DLR [SMSC:rock1] [SVC:playsms1] [ACT:smppclient1] [BINF:] [FID:88] [META:?smpp?dlr_err=%03%00%00&] [from:xxxx] [to:971808339] [flags:-1:-1:-1:-1:1] [msg:94:id:88 sub:001 dlvrd:001 submit date:1302232148 done date:1302232148 stat:DELIVRD err:000 Text:] [udh:0:]
Log Record 1 sent to SMSC - [flags:-1:0:-1:-1:31] sent to SMSC with ALL DLR STATUS [31]
Log Record 2 sent from SMSC - [flags:-1:-1:-1:-1:8] ack receipt from SMSC say I got sms for for processing [8]
Log Record 3 sent from SMSC - [flags:-1:-1:-1:-1:1 ack receipt of SMS being delivered [1]
In your case you have not receiving the delivery report a check your Operator if they are sending your the Delivered to handset (DLR)
Also confirm on DLR table (database) if there heaps of records on the DLR table awaiting ackowledgement receipt (DLR) from the Operator SMSC