how to send notify?

[mexsip]

1. Brekeke Product Name and version: 2.0 sip server

2. Java version: 1.5

3. OS type and the version: win 2003

4. UA (phone), gateway or other hardware/software involved:

5. Select your network pattern from http://www.brekeke-sip.com/bbs/network/networkpatterns.html :

6. Your problem:
I need to send a notify to a user agent. How can I create a dialplan, by for example dialing a number which results in sending a notify to a useragent.

something like this:

request= invite
to=sip123(.+)@

deploy pattern
notify .......

thanks,
Pablo