Although the MPC number is not a private number, it should not be made known to everyone to call. Only legitimate MPC members should use them otherwise non members would tie up lines that are meant to go to MPC members.
Non members who attempt to use MPC phone lines will be pushed to the back of the queue so it is really useless for anyone else to use them.
Besides, what is the purpose for cxfan1960 to even recommend panjabi to call the MPC line? panjabi is on waitlist, and his AA Plat number is on the res. That is the only way that his waitlist is going to get prioritized. Having a new green MPC number is not going to help one bit. So just keep his Oneworld Sapphire on. That will help the waitlist if something becomes available.
So for panjabi to check his status... is to call to whoever made his reservation in the first place.. which is CX. If its confirmed, CX will either call you or you will find out when you call.
CX has a tendency to hold some J seats up to one week prior departure. So maybe you might be lucky then.