Hi, I am trying to send bulk sms using sms_client using GSM/GPRS ANALOGIC MODEM . Below is the log file ----------------------------------------------------------------------------- MODEM: Toggle DTR 1000000 Microseconds MODEM: Toggle DTR 1000000 Microseconds MDM_send: Drain required. WARNING: read() Timeout Written String: +<CR>+ Written String: +<CR>+ Written String: +ATE0<CR>+ WARNING: read() Timeout ERROR: Timeout: searching for +<CR><LF>+ failed after 10 seconds Received String: +EE<ENQ>T<BS>a+ ERROR: MODEM: Setting Local echo Failed ---------------------------------------------------------------------------------------------- and also SMS_MODEM Config MDM_lock_dir = "/var/lock" # Lock directory MDM_device = "ttyS2" # Modem Device Name # Modem Device Name Examples: # # ssscxzvbnmmuoliytreDM_device = "term/00m" # UNIXWARE # MDM_device = "ttyS0" # Linux COM1 # MDM_device = "ttyS1" # Linux COM2 # # MDM_device = "cua/a" # SOLARIS # MDM_lock_platform = "SOLARIS" # Set this so that we generate # Solaris compatible lock file # names # ------------------------------------------------------------ # MDM_pause_after_connect = 3000000 # Pause after the connection # string for 3 seconds MDM_command_prefix = "AT" MDM_init_command = "Z" MDM_dial_command = "DT" MDM_number_prefix = "0" # Number to dial to get an # external line. MDM_set_local_echo_off = "E0" MDM_disable_echo_test = NO # Test and Set local echo # YES/NO # ------------------------------------------------------------ MDM_dtr_hangup_sleep = 3000000 # How many microseconds should MDM_dtr_init_sleep = 1000000 # I lower DTR during # init/hangup # ------------------- vvvvvvvxxxxxxxxxxxxxxxxxx ----------------------------------------- MDM_command_suffix = "\r" MDM_response_prefix = "\r\n" MDM_response_suffix = "\r\n" MDM_flow_control = "Hardware" # Software or Hardware # ------------------------------------------------------------ MDM_hangup_command = "H" MDM_attention_command = "+++" MDM_soft_hangup_retries = 0 # Number of times I should # continue sending hangup code # If 0 then don''t bother # and rely on lowering DTR MDM_guard_time = 1750000 # Microsecond delay before and # After transmitting attention command MDM_esc_time = 125000 # Microsecond delay between each # character of the attention command # ------------------------------------------------------------ MDM_lock_action = "BLOCK" MDM_lock_retry_delay = 5000000 # Microsecond delay to wait before # retrying for modem lock. } ------------------------------------------------------------------------------------------------------------------- can somebody help me out why its failing at time of receving string. **I dont know even this is right group for discuss this topic.Because on odir.com I search lot from where we start new thread