[Serusers] lookup(aliases) question

I've had mixed results in the past using the lookup(aliases) command. I'd like to get clarification on the proper placement of this command in the proxy configuration file before trying additional tests. Right now I have lookup("aliases") within conditional statements in the config file. serctl doesn't seem to experience any problem when I add aliases but the alias doesn't seem to be a reachable address for incoming calls. In order for this command to work and the alias table to be created properly do I need to have the lookup("aliases") command in route block 0 in a position where it is executed on each pass through the configuration? Thanks,Steve -- ISC Network Engineering The University of Pennsylvania 3401 Walnut Street, Suite 221A Philadelphia, PA 19104 voice: 215-573-8396 215-746-7903 fax: 215-898-9348 sip:blairs@upenn.edu