another way to go is to have an ipe with no ring generator. all analog sets in that loop will not ring.. i used loop 88 1 for the sleep lab and modems for users that wanted outbound on there networked pc's.. if your system is large enough to allow that it just takes a flip of the switch.. i've used 7 digit dn's on sets with no ringer and block number display, since the user does not know the dn, it would be a little hard to guess, even if the number was displayed, it would be internal calls only.. another way to block calls to an analog is to hard forward the set then change the analog call forward cancel ffc
john poole
bellsouth business
columbia,sc