How can I get Siri to insert a pause (,) when voice-dialing a number?

Question

I join a lot of conference calls with my iPhone.  The conference bridges have phone numbers that follow this pattern:
[phone],1234567#
How can I get Siri to insert the pause (,) character, and the pound (hash) sign, into the phone number when voice-dialing?
When I say "pause" Siri inserts the word "pause" as a literal string: 
     Example: [phone] pause 1234567
When I say "comma" Siri will insert a comma (,) into the dial string, but the Phone app ignores everything after the comma and does not dial it:
     Example: [phone], 1234567   results in only this being dialed:  [phone]
When I say "pound" or "hash" Siri inserts the words "pound" or "hash" as literal strings:
     Example: [phone], 1234567 pound     instead of [phone],1234567#

Answer 1

If it is your own conference bridge you can create a new contact named "My Bridge" and enter your 1800 number along with a "wait" command and pass code and #.  It would look something like this 1-800-555-5555;12345678#.  This way when you tell Siri to call "My Bridge" she'll dial and then you'll notice an option in the lower left to dial the pass code.  Press that and you're all set. You can do the same for frequent conference bridges you connect to.  Hope this helps.