Grandstream GXP2135 IP Phone

Grandstream GXP2135 IP Phone — The High-Performance Desk Phone Built for Bangladesh’s Busiest Professionals

If you’ve spent any time working in a busy office — a corporate front desk in Gulshan, a bank branch in Motijheel, a customer service floor in Tejgaon — you know exactly what it feels like when your desk phone can’t keep up. Missed calls because all lines are tied up. Fumbling through a clunky phonebook mid-conversation. Dropping a conference just when it matters most. These aren’t just frustrations — they’re daily productivity hits that quietly erode your team’s efficiency. The Grandstream GXP2135 was designed from the ground up to eliminate every one of them.

The Grandstream GXP2135 is a high-end enterprise IP phone that packs serious capability into a clean, professional form factor. It supports 8 lines with 4 SIP accounts, giving power users the ability to juggle multiple active calls across different extensions or even different organisations simultaneously — all from a single device. The 2.8-inch colour LCD display is sharp and responsive, while 32 fully programmable BLF (Busy Lamp Field) and speed-dial keys let receptionists and team leads monitor colleague availability and transfer calls with a single press, no dialling required.

What genuinely sets it apart at this price tier is the combination of features rarely seen bundled together: dual auto-sensing Gigabit Ethernet ports with built-in Power over Ethernet (PoE), integrated Bluetooth for seamless headset pairing and mobile device connectivity, full HD audio across both handset and speakerphone, and enterprise-grade TLS and SRTP encryption to protect every call. For businesses in Bangladesh deploying IP PBX systems — whether Grandstream UCM, Synway, or another SIP-compatible platform — the GXP2135 pairs effortlessly via zero-configuration auto-provisioning, which dramatically reduces IT setup time across large deployments.

This phone is the right choice for receptionists, call centre agents, executives, bank tellers, hotel front desk staff, NGO administrators, and any professional in Bangladesh who handles a meaningful volume of calls daily and needs a device that simply keeps up.

Grandstream GXP2135 Specifications

Why You Buy Grandstream GXP2135

• 32 BLF Keys + 8 Lines — The Receptionist and Call Centre Agent’s Best Friend in Bangladesh — One of the biggest daily pain points in Bangladeshi offices is the inability to quickly see who is available, who is on a call, and where to transfer incoming callers without putting them on hold for two minutes. The GXP2135’s 32 programmable BLF keys solve this completely. Each key can be assigned to a colleague’s extension with a live status indicator, so a receptionist at a Dhaka corporate office can see at a glance that a department head is free, and transfer with a single press. Combine that with 8 lines and 4 SIP accounts, and a single GXP2135 can replace the functionality of multiple lesser devices.
• Built-in Gigabit PoE + Bluetooth — No Clutter, No Extra Hardware, Just Clean Connectivity — For IT managers deploying IP phones across multiple floors or across a large office in Bangladesh, cabling simplicity matters enormously. The GXP2135’s dual Gigabit PoE ports mean the phone draws power directly from your network switch — no separate power adapter needed, no extra wall socket required. The PC port even lets you daisy-chain a workstation through the phone, saving a switch port. Add built-in Bluetooth for wireless headset connectivity and mobile device pairing (sync contacts, calendars, and transfer calls from your phone to the desk device), and you have a genuinely modern workspace tool, not just a desk phone.
• Zero-Config Auto-Provisioning — Cut Deployment Time Dramatically for Large Bangladeshi Organisations — Deploying 50 or 100 IP phones manually across a large bank, hospital, or corporate headquarters is a significant IT project. The GXP2135 supports zero-configuration auto-provisioning when paired with Grandstream UCM series IP PBXs, as well as TR-069 and AES encrypted XML provisioning for other platforms. This means your IT team can configure a phone centrally and have it ready for a new employee in minutes — no physical intervention, no manual IP entry at each desk. For organisations in Bangladesh scaling their telephony infrastructure rapidly, this feature alone represents substantial time and cost savings.

FAQ

Q1: Is the Grandstream GXP2135 compatible with IP PBX systems commonly used in Bangladesh, such as Synway or other SIP-based platforms? Yes, fully. The GXP2135 is a standards-based SIP phone compliant with RFC3261, which means it works seamlessly with any SIP-compatible IP PBX system — including Synway UC series, Grandstream UCM series, Asterisk, FreePBX, and most other platforms deployed across Bangladesh. When used with Grandstream’s own UCM series PBXs, it also supports zero-configuration auto-provisioning for especially fast deployment. For other platforms, it can be provisioned via TR-069, TFTP, HTTP, or AES encrypted XML files.

Q2: Does the Grandstream GXP2135 need a separate power adapter, or does it run on PoE? Both options are supported. The GXP2135 has built-in IEEE 802.3af Power over Ethernet, meaning it can draw power directly from a PoE-capable network switch — no separate power adapter needed at the desk. If your switch doesn’t support PoE, a universal power adapter (100–240V input, 12V output) is included in the box. Maximum power consumption is only 6.49W under PoE, making it an energy-efficient choice for organisations looking to minimise running costs across a large phone deployment.

Q3: Can the Grandstream GXP2135 be used with a wireless Bluetooth headset in a busy Dhaka office environment? Absolutely. The GXP2135 has integrated Bluetooth that pairs directly with compatible wireless Bluetooth headsets, allowing staff to move around the desk area freely while staying on calls — particularly useful for receptionists, sales staff, and customer service agents who need hands-free mobility. Beyond headsets, the Bluetooth connection also allows pairing with a mobile phone to sync contact books and calendars, and even transfer an ongoing mobile call to the desk phone mid-conversation. For the traditional headset connection, it also supports RJ9 with EHS compatibility for Plantronics wired headsets.