Can anyone help me with a little problem I have.

I have been using an SPA 1001 and SPA3000 in a back to back config with
a hotline dialplan to give me a PBX extension over a wireless bridge.
This has been working fine, no problems for a number of weeks now....

However, I now want to use line 2 (on the SPA1001) for a sipgate
account - simple enough I thought, and configured as per sipgates
instructions.

Essentially, both lines work - the only problem I have is switching
between them. If I set the back to back config as the default line,
the SPA1001 won't switch to the sipgate line using the # key on the
phone (as it's passing all DTMF tones directly to the SPA3000 at the
onther end)

If I reverse this config, and make the sipgate account the default, on
pressing # to switch line i get a locally generated dialtone and the
back to back hotline config fails, with no IP traffic between the local
SPA1001 and the remote SPA3000.

Does anyone have a cunning dialplan that would allow me to specify that
if the number starts with a 2,4,5,6 or a 9, then it used the back to
back config, but if it starts with a 0, or is 6 digits it uses the
sipgate line. Essentially I don't need a hotline config in this
scenario. However - if dialing 9 to gain an outside line via the pbx,
can the SPA1000 be programmed to insert a pause of 3 seconds between
the 9 and the rest of the number?

Many thanks in advance for anyones help..

Melodic.