break sequence during Sun host boot up stage

Using Ctrl-e-c-l-0 to send break works fine when Solaris machine booted up to either single user or multi-user mode.
However, when SunSPARC is with its booting up stage (with cursor spinning), the same key stroke sequence can only not send break to it. 
We can get around with Ctrl-e-c-l-3 to get to host with LOM.   
But for hosts without LOM, our choices are either to disable conserver or power-cycle SunSPARC.   

I searched the archive and found several similar questions but not the right answer as to where Ctrl-e-c-l-0 (break 0) is defined. 

We upgrade from 7.2.7 to 8.1.4, found out about this problem, then found 8.1.8 which said to fix break problem - Yet still we still have the same issue even with version 8.1.8. 

Here is our configuration: 
break 1 { string "\z"; }
break 2 { string "\r\d~\d^b"; delay 200; }
break 3 { string "#."; }
default sun-std { break 1; }
default sun-alt { break 2; }
default sun-lom { break 3; }

Please help.  Thanks. 

Chi-Tai Yang  212-858-7074 
chi-tai.yang@rbccm.com



<font face="Times New Roman" size="3">
<p>------------------------------------------------------------------------------</p>
<p> This E-Mail (including any attachments) may contain privileged or confidential information.  It is intended only for the addressee(s) indicated above. The sender does not waive any of its rights, privileges or other protections respecting this information.  Any distribution, copying or other use of this E-Mail or the information it contains, by other than an intended recipient, is not sanctioned and is prohibited. If you received this E-Mail in error, please delete it and advise the sender (by return E-Mail or otherwise) immediately.</p>
<p> This E-Mail (including any attachments) has been scanned for viruses.  It is believed to be free of any virus or other defect that might affect any computer system into which it is received and opened.  However, it is the responsibility of the recipient to ensure that it is virus free.  The sender accepts no responsibility for any loss or damage arising in any way from its use.</p>
<p> E-Mail received by or sent from RBC Capital Markets is subject to review by Supervisory personnel.  Such communications are retained and may be produced to regulatory authorities or others with legal rights to the information.</p>
<p>====================================================</p>
</font>