marcbWe are a small firm too (3). We also provide IP based phone systems. Our Automated Phone Attendant offers an after hours emergency message. When the caller leaves an after hours emerg message, our phone system emails the message and sends an sms text message to our cell phones. It keeps sending every 5 minutes in a specified order if no one calles in for the message. Once any person calls in for the message, the system stops sending the alert. In the past year, this has worked very well and we have had only one emerg call and it turned out to be a wrong number.