SIP -Cisco303 & No Caller ID

I’m not familiar with the CISCI 303 but Allmon2 shows the caller ID set by the Zipper setup.

My Zopier is set up as noted in this post, Notice how I set caller ID.

Try something like this:

exten => 500540,1,rpt(${EXTEN}|P|${CALLERID(name)}-P)