Your search for "PVDM4" revealed the following:
NEW Cisco ISR4431-V/K9 Integrated Services 4431 Router w/ PVDM4-64
SKU: NSN-2421
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 3,349.99
• Only 1 remaining
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NEW Cisco ISR4451-X-V/K9 Integrated Services 4451 Router w/ PVDM4-64
SKU: NSN-2125
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 2,819.99
• Only 2 remaining
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NEW Cisco ISR4351-V/K9 Integrated Services 4351 Voice Router w/ PVDM4-64
SKU: NSN-6005
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,084.99
• 4 in stock
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Cisco ISR4331-V/K9 ISR 4331 Router w/ PVDM4-32
SKU: NSH-6049
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 158.99
• Only 2 remaining
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Cisco ISR4331-AXV/K9 ISR 4331 Application Experience Router w/ PVDM4-32
SKU: NSH-8983
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 245.99
• Only 2 remaining
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NEW Cisco PVDM4-64 ISR 4000 Series Router 64-Channel High-Density Voice DSP PVDM
SKU: NSN-3119
Condition: New
Shipping: Overnight Options
Warranty: 365 days