having never done paging on a 2000 i am in need of some help in setting it up.

here's what i've got so far:

free co port. lens 0171

cmd 10-0171=d150

cmd 3000-150=60

cmd 3028-150=00

cmd 200-4=160 (will change this to a 2 digit code later. 4 was set to none)

cmd 3500-60=05

cmd 3502-60=3

cmd 3508-60=3

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i can page by dialing a 4. but after 3-4 seconds i get a fast busy from the system.

speakers are valcom 24v amplified celing speakers connected to the co port and a 24v power supply.

also is there a way to page both internal phone sets (which they do now) & the external speakers at the same time??