The difference between w and p
Here's the difference between w(ait) and p(ause): the p command should pause for 3 seconds and then send whatever follows the p. If you use w, it stops until the connection is completed, and then sends whatever follows the w. Wait is generally, therefore, better suited to dialing extensions, especially if you're not sure whether the line will be picked up within 3 seconds. Pause is best for multiple prompts - for my voice mail, for example, I use the number, then a w followed by my mailbox number (which is different than the dialed number), then a p followed by my password. So it would be something like 18045551212w5551234p1234.
And the p and w have been supported since long before WM5; I used them in the speed dial on my bag phone.
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