Cisco 7941 and pound

I use a Cisco 7961 with SIP41.8-5-3S but same problem. The Dial Button does not work, got someone this working together with Asterisk

I upgraded the phone firmware to SIP41.8-5-3S, but am still experiencing this annoying problem. Any suggestions on how to fix this?
The asterisk log shows the # character as part of the dial string. Some of the external trunks can deal with this just fine. For internal extension dialing (3 digits) it results in an error.

Did you find an answer meanwhile? I'm having the exact same problem with my 7941, running SW version SIP41.8-4-3S.
Tried the below dialplan, but no success. In fact the # character is passed on to asterisk, causing the error "Your call can not be completed as dialed".
A 7960 phone in my network works great, using the same dialplan, and without changing anything on the asterisk site.

<DIALTEMPLATE>
<TEMPLATE MATCH="*#" Timeout="0" User="Phone" />
<TEMPLATE MATCH="*" Timeout="4" User="Phone" />
</DIALTEMPLATE>

I would imagine it's possible by putting in a <TEMPLATE> into your dialplan.xml that matches a solitary # with a timeout of 0.

You should let me know if that works. By the way, how much experience with * and Cisco phones have you had?

Is there a way to make pound (#) button to make a cisco 7941 phone with sip firmware to dial immediately?