Asterisk Monitoring Application

We are looking for an application that will monitor several Asterisk boxes for the health of the system. That means to check in configurable intervals the status of the Linux OS, major deamons/applications/devices of Linux, the Asterisk application, the ZAP channels and major Asterisk components. The solution have to provide a graphical status of the Asterisk boxes and be configurable to handle several events/alarms by sending email or calling a phone number (using another Asterisk box) etc. We are open to discuss and design the solution based on proposals from the service providers. The desired provider should prove the experience working with Asterisk and Linux. Final project approval after demonstration. Really important is that we are looking for LONG TERM relationship (with further development on the project or new projects) and also looking to work with people that have good communication skills and willingness to work on a fast moving and demanding project. Really important is also the level of availability for communication with the people we work with, either by phone or email or chat etc.