Hello,
I am not sure if this is what you are looking at.I assume you want 3 calls to be handled on extn 1000.Is that right.
You can try to do this as follows.
Configure 3 partitions -- P1,P2,P3
configure 3 Calling search space -CSS1,CSS2 ,CSS3
CSS1 contains Partions1 and this is the general partitions which every phone can reach.
CSS2 contains only P2
CSS3 contains only P3
Configure both the phones as follows.Disable callwainting on all the lines.
Line 1 1000 partitions: P1 Css-CSS1
Callforwarsding on this is as follows.
CFB and CFA- 1000 and CSS is CSS2
Line 2 1000 P-P2 CSS-CSS2
CFB and CFA 1000 CSS-CSS3
Configure the 3rd line similary.
I hope this helps.
Thanks,
Radhika