asterisk users - Dec 2005 - CallerID/Extension Matching with Realtime Extensions

In a regular extensions.conf, you can specify an extension as
callerid/extension. For example
 
5551212/8000 => dosomething.
 
which matches when a user with callerid 5551212 dials 8000. 
This doesn't work with realtime extensions..... or does it? Does someone
know how it's done?
The following doesn't work. Asterisk can't find the number.
 
mysql> select * from extensions_table order by context, exten, priority;    
+----+----------+-----------+----------+----------+--------------------------+
| id | context  | exten     | priority | app      | appdata                  |
+----+----------+-----------+----------+----------+--------------------------+
| 14 | context2 | 1001/1401 |        1 | Answer   |                          |
| 15 | context2 | 1001/1401 |        2 | Playback | hang-on-a-second-angry   |
| 16 | context2 | 1001/1401 |        3 | Hangup   |                          |
 
Doug.

Douglas Garstang wrote:
> which matches when a user with callerid 5551212 dials 8000. 
> This doesn't work with realtime extensions..... or does it? Does
someone know how it's done?
> The following doesn't work. Asterisk can't find the number.
The docs for Realtime extensions clearly state that CallerID matching is 
not supported.