Cisco ISR4321-V/K9 Voice Router with PVDM4-32 DSP Module
Price includes warranty
ServerDove
Product Specification
| Ethernet Ports | 2 × Gigabit Ethernet ports |
| Voice Support | Voice-enabled platform with Cisco CME support |
| DSP Module | PVDM4-32 |
| Voice Protocol Support | VoIP, SIP, and analog voice gateways |
| Mounting | Rack-mountable compact design |
Refurbished · Tested
Cisco ISR4321-V/K9 voice router with a PVDM4-32 DSP module fitted, for branch routing, SIP trunking and Cisco CME telephony.
This is a refurbished Cisco ISR4321-V/K9, the voice bundle of the entry model in Cisco's 4000 Series Integrated Services Router family, supplied with a PVDM4-32 DSP module fitted on the motherboard. Our SKU for this configuration is RTR-CISCO-ISR4321V-PVDM4-32. The router has two Gigabit Ethernet ports, runs Cisco IOS XE and supports Cisco Unified Communications Manager Express (CME), so one compact unit can route branch traffic and handle local call processing. The PVDM4-32 adds dedicated DSP resources for VoIP, SIP and analogue voice gateway work, such as connecting an office phone system to a SIP provider or to analogue lines through voice interface modules. Buyers in Qatar use it as the edge router and call controller for a branch or small office, or as a like-for-like replacement for a failed unit in an existing Cisco voice design. We hold this exact configuration in Doha.
RTR-CISCO-ISR4321V-PVDM4-32Specification
The two Gigabit Ethernet ports are routed interfaces for WAN and LAN connections. Further interfaces, such as analogue voice ports, serial links or switch ports, are added through the two Network Interface Module (NIM) slots, while the DSP module sits in its own onboard slot and leaves both NIM slots free.
Installation
Plan for one rack unit in a standard 19 inch rack and keep the side vents clear, as the chassis draws air from side to side. Make the first configuration through the console port, then set up the WAN interface, routing and management access before adding voice services. Confirm that the PVDM4-32 is detected with the show inventory command and that its DSP resources are available to the voice configuration. Analogue phones, fax machines or telephone lines need a voice interface module in one of the NIM slots, because the two Ethernet ports carry data only. For SIP trunking or IP handsets, apply quality of service on the WAN link so voice traffic is prioritised over general data.
Part numbers and identification
Condition & testing
- Powered on and boot verified
- Ports tested, configuration reset to factory defaults
- Fully working; minor cosmetic marks are possible on refurbished units.
- 6-month warranty on every unit we sell, with installation and support across Qatar.
What ships with this device
Images are for illustration. The unit supplied is the one described in the specification and may differ cosmetically.
Our team in Doha answers specification and compatibility questions during working hours.
Ask on WhatsApp sales@serverdove.comWhat is the Cisco ISR4321-V/K9 used for?
It is used for branch routing and voice-enabled deployments, including IP telephony and VoIP gateway applications.
Does this router support Cisco CME?
Yes, this voice-enabled platform supports Cisco CME deployments.
What voice features are included?
The router supports VoIP, SIP, and analog voice gateway use cases and includes a PVDM4-32 DSP module.
How many network ports does it have?
It includes 2 Gigabit Ethernet ports.
Is this suitable for small business voice networks?
Yes, it is suitable for small to medium business voice networks and branch office deployments.
What does refurbished mean at ServerDove?
Off-lease or decommissioned enterprise hardware that we clean, test and reset in Doha. Every unit goes through POST, burn-in, memory and drive checks and a power-supply check, with firmware and BIOS returned to defaults and drives securely erased.
Can I ask about the exact unit before I buy?
Yes. Message us the SKU on WhatsApp and we will confirm the condition and configuration of the unit in stock, with photos if you want them.
How fast is delivery in Qatar?
Orders ship from Doha and arrive within one working day anywhere in Qatar. Delivery is free on orders over QAR 300.
Can I collect in person?
Yes, from Nuaija Office 7, Doha, usually within 24 hours of ordering. Choose pick-up at checkout and we will message you when it is ready.
What warranty is included?
A 6-month hardware warranty from the delivery date, covering the unit as supplied. If a part fails we repair or replace it. Full terms are on the warranty page.
What is your return policy?
If the unit arrives faulty or not as described, tell us and we will collect it and replace or refund it. Full terms are on the Refund Policy page.
Which payment methods do you accept?
Visa, Mastercard and American Express online. Bank transfer is available for company orders; contact us for details.
Is the price shown the final price?
Yes. The price shown is what you pay; nothing is added at checkout, and every order ships with an invoice in your name or your company's name.
Why buy refurbished
Enterprise hardware, tested in Doha, at a fraction of the price of new
Every unit we sell has already proven itself in a data centre. We test it again, grade it, and back it with a warranty before it leaves our stock.
Tested before it ships
POST, burn-in, memory and power-supply checks on every unit. Anything that fails is repaired or pulled from stock, not sold.
Same performance, lower cost
A Xeon runs the same workloads whether it is new or two years old. Spend the difference on more CPUs, memory or storage.
In stock, not on order
New enterprise hardware can take weeks or months to arrive. Ours is on the shelf in Doha and delivered across Qatar within a day.
Warranty and local support
Every unit is covered. Installation, configuration and hardware support are handled by our own team in Qatar, not a call centre abroad.