I used a router with "ip helper-address" to allow bootp traffic,and now the router is changed to a pix firewall,how to config a pix firewall to allow bootp traffic?

I used "show test" command to check the temperature of 4006 switch,the result is as follows,and no error occur:4006> sh testEnvironmental Status (. = Pass, F = Fail, U = Unknown, N = Not Present) PS1: . PS2: . PS3: . PS1 Fan: . PS2 Fan: . ...

we have a cisco2621,ios is 12.2 or 12.0.7t,configuration is as follows:interface FastEthernet0/0 ip address 82.0.0.1 255.255.255.0 no ip directed-broadcast duplex auto no sh speed auto£¡router eigrp 100 network 82.0.0.0 no auto-summary !ip route 1.0....

ques 1:we use the following top for voip:telephone A-----FXS----3600----WAN----2600----FXS----telephone B3600's ios is 12.0.3T3,2600's ios is 12.0.4T.when side A is calling side B, and side A hangs up later,side B can't not hang up and continue to ri...