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Refurb Squared IP PBX-D503, Support 600 Users and 150 Concurrent Calls, with 2 Slots for E1/T1,FXS,FXO and Hybrid FXU Cards

Refurb Squared IP PBX-D503, Support 600 Users and 150 Concurrent Calls, with 2 Slots for E1/T1,FXS,FXO and Hybrid FXU Cards

Model

Product SKU

RS-IP-PBX-D503-74241

Description

Refurb Squared delivers fully tested, OEM-compatible optical transceivers, DWDM/CWDM systems, media converters and DAC/AOC cables coded for Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet platforms, with lifetime warranty and fast global delivery.

IP PBX-D503 provides a centralized solution for enterprise communications needs. Supports 600 users and 150 concurrent calls, and provides two hot-swappable FXO, FXS, Hybrid FXU, and DTU installation slots. Supports a maximum of eight analog phones or eight analog external lines, and two E1/T1 digital trunks. It can be flexibly configured and combined based on actual scenarios. Truly set voice, video, paging, fax, meeting, recording and other practical functions in one. Achieve enterprise-level unified VoIP communication with innovative software features.

Refurb Squared is brand of OEM-compatible optical networking products, including SFP, SFP+, QSFP+, QSFP28 and QSFP-DD transceivers, DWDM/CWDM systems, media converters, and DAC/AOC cables. Every module is 100% pre-shipment tested and coded for seamless compatibility with major platforms such as Cisco, Huawei, Juniper, Arista, HPE, Dell, Nokia and Fortinet backed by a lifetime warranty, fast global delivery, and dedicated technical support for data centers, telecom operators, enterprise networks and system integrators worldwide.

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AUTHENTICITY & TESTING

Professionally verified before dispatch.

Every product is prepared for business use with checks for quality, functionality, and physical condition. Refurb Squared focuses on reliable, compatible equipment for enterprise environments.

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Quality checked

Inspected for condition, function, and readiness before fulfilment.

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Business-grade

Selected for dependable use across servers, networks, storage, and IT infrastructure.

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Circular IT

Extends hardware lifecycle and supports more sustainable IT procurement.

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Trusted sourcing

Supplied through a professional refurbished equipment process.

COMPATIBILITY CONFIDENCE

Built to fit your infrastructure.

Not sure if this product is right for your environment? Send us your model, part number, or project requirement and we will help confirm compatibility before purchase.

  • 1Share your server, switch, router, storage, or system model.
  • 2Confirm the required speed, connector, form factor, or configuration.
  • 3Get guidance before placing an order or requesting a quote.
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Lifetime warranty options

Selected products are supported with lifetime warranty coverage for long-term peace of mind.

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Expert support

Our team can help with configuration, compatibility questions, and sourcing alternatives.

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Fast quote assistance

Need bulk quantity, special compatibility, or project pricing? Send your requirement on WhatsApp.

NEED CONFIRMATION?

Ask before you buy.

Send this product link with your requirement and our team will help confirm availability, compatibility, and options.

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