only 2 analogue extn can taken from BCM 50 Basic system.
If u r going through expansion module GASM 4/8 will support u to increase the analogue extension capacity....
In case of BCM 200 and above it depends upon the MBM GASM which u r using....
The BCM 50 system can support up to four analogue phone via key code licenses, without having to add a ATA or GASM unit on the RJ-21 multi cable using ports 5 to 8.
A BCM 50 release 1 hardware that has been upgraded to release 2 or later also has the analogue ports & analogue trunks. You just can't activate the analogue sets on Rel 1, but the hardware is there.
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