Kannelis a compact and very powerful open source WAP and SMS gateway, usedwidely across the globe both for serving trillions of short messages (SMS), WAPPush service indications and mobile internet connectivity.Documentation Kannel User Guide
For more troubleshoot gothrough Kannel User Guide 
Download Kannel RPM or Source Code
KannelSource Code
md5:54a71e14a681641f1b670bf9925decfa gateway-1.4.3.zip
sha1:515a9aa1df52e3d14c753b95faba580a02c0787c gateway-1.4.3.zip
KannelRPM’s
Downloadfrom RPM Repo
Searchyour Linux version from Here
Howto install Kannel on Centos 5.4
#rpm -ivh kannel-1.4.2-1.el5.rf.i386.rpm
#rpm -ivh kannel-devel-1.4.2-1.el5.rf.i386.rpm
Editthe default Kannel configuration
#vim /etc/kannel.conf
#Default kannel configuration file without Database
group= core
admin-port= 13000
admin-password= abc
status-password= def
admin-deny-ip= “*.*.*.*”
admin-allow-ip= “127.0.0.1”
smsbox-port= 13001
#wapbox-port= 13002
box-deny-ip= “*.*.*.*”
box-allow-ip= “127.0.0.1”
wdp-interface-name= “*”
log-file= “/var/log/kannel/bearerbox.log”
log-level= 1
##################SMSC CONFIGURATION ##################
group= smsc
smsc= smpp
smsc-id= smsc1
host= 10.27.23.12
port= 5839
#receive-port= 2775
transceiver-mode= 1
smsc-username= smsuser
smsc-password= smspass
system-type=
source-addr-ton= 1
dest-addr-ton= 1
throughput= 10
connect-allow-ip= “*.*.*.*”
keepalive= 50
################SMSBOX CONFIGURATION ##################
group= smsbox
bearerbox-host= 127.0.0.1
sendsms-port= 13013
global-sender= 13013
#sendsms-chars= “0123456789 +-“
##log-file= “/tmp/smsbox.log”
##log-level= 0
##access-log= “/tmp/access.log”
################SENDSMS CONFIGURATION ##################
group= sendsms-user
username= tester
password= foobar
concatenation=true
max-messages= 3
################RECEIVE SMS CONFIGURATION ##################
#group= sms-service
#keyword=
#keyword-regex= .*
#catch-all= yes
#max-messages= 0
Howto start & stop the bearerbox & smsbox
#/usr/sbin/smsbox /etc/kannel.conf &
#/usr/sbin/bearerbox /etc/kannel.conf &
Howto Stop the kannel service
#/etc/init.d/kannel stop
Howto check logs for kannel
#tail -20f /sdp/wap_push_promotion/bearerbox.log
Howto check the kannel process is running or not?
#  ps -ef | grep kannel
root     11314 11281  0 14:05 pts/2    00:00:00 grep kannel
kannel   20609    1  0 Aug02 ?        00:00:00 /usr/sbin/bearerbox /etc/kannel.conf
kannel   20628    1  0 Aug02 ?        00:00:00 /usr/sbin/smsbox/etc/kannel.conf
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