Help on Dialplan

I am trying to set up 3 SIP IP550 phones to my Asterisk box .I have configured 2 lines in each phone.

All the phones can talk to one another .But the only thing I am having trouble with is when someone dials say 4 all the phones should ring on line 2.

I am able to ring all the phones on line 1 by adding a line on extensions.conf like this

exten => 4,1,Dial(SIP/John&SIP/Steve&SIP/Bob)
Is there a way to dial the ops line on line2 in all the 3 phones?Please help me out.
Thanks Sudatta

How are the Ops line defined in your SIP.conf?

Shouldn’t it be something like:

exten => 4,1,Dial(SIP/JohnOps&SIP/SteveOps&SIP/BobOps)

Thank you so much…it worked…I realised the mistake i did.In sip.conf i defined it as ops-steve and in extensions.conf I called it by steve-ops and that made the phone all confused.