Yes, use the following command lines to add 1 to 2 second inter-digit delays between the dialing number(s):
1 second delay between digits:
***. (wait for beep)
**9** (wait for beep)
*9*1**200*NUMBER** (wait for beep)
**235* (enables off-hook dialing) (wait for beep)
**4*11* (inter-digit timer settings) (wait for beep)
**2110* (wait for beep)
**2210* (wait for beep)
1.5 second delay between digits:
Replace the last 2 commands for these:
**2115*
**2215*
2 second delay between digits:
Replace the last 2 commands for these:
**2120*
**2220*
If you are programming it remotely (calling it from another line), then you must use the command below to enter the programming mode:
*#1234 (wait for beep)