New Sonicwall Tunnel would overlap existing tunnel

I have an existing VPN tunnel between two Sonicwall TZ-215 routers.  It's dedicated for phone system use and goes from a specific device on Subnet A to a specific device on Subnet B.  Now there is a need to enable access between the two sites for the rest of the subnet at each site.  Can I leave the current tunnel in place and add an additional tunnel that gives access across the subnets on both sides without causing problems with the existing tunnel?
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You would just change the local and remote networks to include the whole subnet for each site instead of a specific device.  This needs to be done on both firewalls.
kbollerAuthor Commented:
I could do that however I don't want the phone system's performance affected by other traffic.  I just checked and didn't see any QOS settings so I'm not sure if that's a valid concern or not.
Sonicwalls have bandwidth management that you could set up and give your VOIP traffic a specific percentage of your total bandwidth.

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kbollerAuthor Commented:
Thanks, I need to update the firmware to be able to utilize Bandwidth Management but that looks like a good solution.
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