IRQ conflict

Hi,
I have two A400E cards installed into a Rhino box.
I have some noise (like beeps... non constant).
By investigating I have found that both cards are sharing the same IRQ number 177.
Can you help me saying how to change it..
The box is running Elastix 2.0
Her you are some logs, look at the IRQ:
#lspci -v
02:00.0 Communication controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN interface
Subsystem: Unknown device b100:0003
Flags: bus master, medium devsel, latency 32, IRQ 177
I/O ports at e000
Memory at fe500000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2
03:00.0 PCI bridge: PLX Technology, Inc. PEX8112 x1 Lane PCI Express-to-PCI Bridge (rev aa) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=03, secondary=04, subordinate=04, sec-latency=32
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fe400000-fe4fffff
Capabilities: [40] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
Capabilities: [60] Express PCI/PCI-X Bridge IRQ 0
Capabilities: [100] Power Budgeting
04:00.0 Communication controller: Tiger Jet Network Inc. Tiger3XX Modem/ISDN interface
Subsystem: Unknown device b100:0003
Flags: bus master, medium devsel, latency 32, IRQ 177
I/O ports at d000
Memory at fe400000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [40] Power Management version 2

Hello

Does your server have other free PCI-e slots,if it has, Please transfer one A400E to free PCI-e slot, Have a try.

Best regards
upper.hua