Replacing Cisco Router(DHCP Server) with pfSense Box

[nfisher]

I'm the IT guy for a medium sized non-profit organization. I would like to replace our current Cisco 831 router with a pfSense Box(an open-source BSD hardware firewall) to provide a few upgrades to our current network(such as dual wan, traffic monitoring, gigabit LAN, Web Based Configuration and a captive portal.) We have a Mitel SX-200 ICP, NSU, ASU and about 100 5215 IP Phones.  The phones serve as a switch for the computers(i.e. line to phone, phone to computer), both receiving IP's from the Cisco Router on the same subnet.  The phone's Network Configuration show "VLAN: None".  My question is what specific DHCP Options need to be added to the DHCP Server in order for the phones to work? As it stands now I have Option 128(SX-200 IP Address), Option 129(SX-200 IP Address), Option 130(MITEL IP PHONE).  I can unplug the Cisco 831 and plug in the new router box and everything continues to work, however, if I reboot the phones they aren't able to come back up, saying "L2&Boot Download Error". Any ideas?

[v2win]

Here are the options that a Mitel phone looks for.

003 - router address IP address (e.g. 192.168.1.1)
128 - (specific) TFTP server IP address (e.g. 192.168.1.2)
129 - (specific) RTC IP address (e.g. 192.168.1.2)
130 - (specific) IP identifier "MITEL IP PHONE"
131 - debug IP address (e.g. 192.167.22.100) optional this is for debugging
132 - (specific) VLAN ID (32 bit) 0x2
133 - (specific) Priority (32 bit) 0x6
134 - (specific) DSCP value 0 to 63 (32 bit) 0x2e (this is 46 decimal in hexadecimal format)

Is the Cisco routing between VLANS or are there any VLANS configured?

[Northeaster]

V2Win - Is using option 125, to give out several of the DHCP parameters,( like tftp address, ICP address, Vlan #, Vlan priority) the newer or older way of doing this?
I know there was a reason / conflict with industry standard DHCP options, or something like that.  But, I am not sure which were the old, and what is the now, preferred way!

If you could shed a bit of light on this, that woudl be great. 

[v2win]

125 is the newer way of doing the DHCP.

The issue I have run into sometimes is the firmware on the phones is old enough that it doesn't know the 125 option but still understands the 128 - 134 options.

Plus its easier IMO to put the older options in.

[nfisher]

There are not any VLANs that I am aware of. Our phones and computers are dynamically assigned by the Cisco 831 in no preferred order. In other words an IP address used by a phone could very  of been assigned to a computer. They all fall within the same subnet 172.16.0.x - 172.16.3.x in no specific order.  Also, when the phones boot they do not show a VLAN present.

[Chakara]

  Then all you should need are 128-130 as listed above.....