If you have a working gnokii sms gateway (for example: a bluetooth phone connected to the zabbix server) you can use it the following way:
Create an sms script (and make it executable) on the zabbix server in the AlertScriptsPath (=/etc/zabbix/alert.d/ on ubuntu)
#!/bin/sh HOME=/etc PATH=/bin:/sbin:/usr/bin:/usr/sbin LOGFILE="/var/log/zabbix-server/zabbix-sms.log" echo "Recipient='$1' Message='$3'" >> ${LOGFILE} MOBILE_NUMBER=`echo "$1" | sed s#\s##` # Log it echo "echo $3 | /usr/bin/sudo /usr/bin/gnokii --sendsms ${MOBILE_NUMBER}" >>${LOGFILE} # Send it echo "$3" | /usr/bin/sudo /usr/bin/gnokii --sendsms "${MOBILE_NUMBER}" 1>>${LOGFILE} 2>&1 # EOF
(credits for script: http://www.zabbix.com/forum/showthread.php?p=45240 , http://www.zabbix.com/forum/member.php?u=4196, I only added the sudo, and added zabbix ALL = NOPASSWD:/usr/bin/gnokii to the sudoers to make it available for the zabbix user)
Configure a media type (menu administration) with the same name as your script (without path, without parameters)
Link this media type to a user (menu administration) and use the phone number (i.e. 31600000000) as Send to parameter.