i need to put my cix on a lan and remote into it by tel-net. can this b done?

if not i do have an amds and ive pointed a DID to it and set it to CIX modem but it will not take any dialing digits ( all of this is in pro. 309)

the person i talked to for tech support told me to build a mailbox and set the ext. field to #19 so i did but that dosent work. so how do i call the system?

thanks in advance also the modem does pick up when i dial intercom #19 so it does work if i call it manually on site.