HP Z440 vs Z640 vs Z840: Which HP Workstation Should You Buy in 2026?
The HP Z440, Z640 and Z840 share a generation of Xeon E5 processors but are built for very...
Cisco networking and voice hardware held in Doha: Catalyst PoE+ switches, ISR 4321 routers, NIM analogue voice and PVDM4 DSP modules, and Cisco IP phones, new and refurbished, for businesses and integrators in Qatar.
This range gathers the Cisco hardware ServerDove carries for business networks and telephony. It includes Catalyst 3850 access switches with PoE+, ISR 4321 integrated services routers in standard and voice configurations, the NIM-2FXS/4FXO analogue voice interface module, PVDM4-32 DSP modules and the Cisco 8851 IP phone.
Together these cover a small or branch Cisco estate: switching and phone power, WAN routing, and on-site call control. The range is aimed at organisations in Qatar that already run Cisco and want matching hardware, and at integrators extending or replacing units in service.
| Family | Role | Worth knowing |
|---|---|---|
| Catalyst switches | Access switching that also powers phones, cameras and access points | Managed, with VLANs and QoS to keep voice traffic clean |
| ISR routers | WAN and internet edge, and voice gateway | Modular: functions are added through NIM slots |
| NIM voice modules | Analogue voice ports on the router | FXS for handsets and fax, FXO for analogue lines |
| PVDM4 DSP modules | Digital signal processing for calls | Needed for analogue or digital voice, transcoding and conferencing |
| IP phones | Desk handsets powered over PoE | Register to Cisco call control, such as CME on an ISR router |
For switching on its own see Cisco switches; for WAN hardware see network routers; handsets and telephony parts sit in voice.
With Cisco, what a unit can do depends on its software image and licences as well as its hardware. Features such as voice, security or advanced routing may need a licence to be active. Before ordering, tell the team which features you rely on, and they will confirm what the listed unit is supplied with.
Cisco hardware ships from Doha stock with delivery across Qatar typically in one day. Refurbished units are tested before listing, and all hardware is covered by the ServerDove warranty. Racking, cabling and base configuration can be added as a service. For other Cisco models or bulk quantities, reach the team through the contact page, WhatsApp on +974 5521 2108 or sales@serverdove.com.
Yes, for most business networks. Refurbished Catalyst switches and ISR routers let you match hardware already in service or equip a new site for less. ServerDove tests each refurbished unit before listing it, and the ServerDove warranty covers it. For older families, check that Cisco's software support status suits your security policy.
It depends on the unit. Cisco ties features to software licences, and the licence level shipped with a device varies. Tell the team which features you need, for example voice or security, and they will confirm what the listed unit includes before you order, so there are no surprises when it is configured.
Yes. ISR routers can run Cisco Unified Communications Manager Express (CME), which provides call control for IP phones on site. PVDM DSP modules supply the voice processing for analogue or digital lines, and NIM voice modules add the physical ports. Licensing applies to phones on CME, so share your handset count when asking for a quote.
The range includes the Cisco 8851, a colour-display desk phone powered over PoE. Other Cisco handsets can be sourced on request. Tell the team your call control platform and software version, because the phone must be supported by the system it registers to.
ServerDove does not guess compatibility. Send the model numbers and software versions of your current Cisco routers or switches, and the team will check slot type, platform generation and software support before you order. This matters most when adding a module to a router or a switch to an existing stack.
Base configuration is available as a service, along with installation, racking and cabling. A switch or router can arrive with a starting configuration so your team finishes the detail on site. Mention it when you request a quote, together with any addressing or VLAN plan you already have.
The HP Z440, Z640 and Z840 share a generation of Xeon E5 processors but are built for very...
The Dell Precision T5820, T7820 and T7920 share a generation of Xeon processors but are built for very...
10GbE was the default server port for a decade, but NVMe storage and dense virtualisation have outgrown it....
DDR5 doubles bandwidth and capacity per module and is the only option on every current platform. DDR4 is...