dtmf('#') and dtmf('*') are not detected correctly

[GoogleCodeExporter]

a) Before posting your issue you MUST answer to the questions otherwise it
will be rejected (invalid status) by us
b) Please check the issue tacker to avoid duplication
c) Please provide network capture (Wireshark) or Javascript console log
if you want quick response

What steps will reproduce the problem?
1.From the latest sipml5 demo, make a call to FreeSWITCH server with a call 
plan that requires dtmf input.
2. Updated tsip_api_invite.js file with the patch provided by 
[email protected]
3. dtmf('#') and dtmf('*') are sent as dtmf('0')

What is the expected output? What do you see instead?
When pressing # or * keys, I expect them to be received as dtmf('#') or 
dtmf('*')

What version of the product are you using? On what operating system?
sipml5 (svn checkout http://sipml5.googlecode.com/svn/trunk/ sipml5-read-only)
FreeSWITCH v1.14.15

Please provide any additional information below.

Original issue reported on code.google.com by [email protected] on 28 Feb 2015 at 1:00