Sending Bulk SMS

Rails
1

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: ++
Written String: ++
Written String: +ATE0+
WARNING: read() Timeout
ERROR: Timeout: searching for ++ failed after 10 seconds
Received String: +EETa+
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