Introduction
The Grandstream GHP611 is a compact IP phone designed for various environments, including hotels, hospitals, apartments, and retail stores. It features built-in Wi-Fi, high-definition speakerphone on the handset, two SIP accounts/lines, 10 speed dial keys, and 3 programmable keys. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your GHP611 phone.

Figure 1: Front view of the Grandstream GHP611 phone, showcasing its sleek black design and compact form factor.
Package Contents
Before you begin, please verify that your package contains the following items:
- Grandstream GHP611 IP Phone Unit
- Handset with coiled cord
- Ethernet Cable
- Wall Mount Bracket (if applicable)
- Quick Installation Guide
Setup
Physical Installation
- Connect the Handset: Plug one end of the coiled cord into the handset and the other end into the handset port on the phone unit.
- Connect to Network: Connect one end of the Ethernet cable to the LAN port on the GHP611 and the other end to an active network port (e.g., a router or network switch).
- Power On: The GHP611 is powered via Power over Ethernet (PoE) if your network switch supports it. If not, an optional power adapter (not included) can be used. Connect the power adapter to the phone's power port and then to a power outlet.

Figure 2: Rear view of the Grandstream GHP611, showing the handset connection and network ports for setup.
Initial Configuration
The GHP611 typically receives its configuration from a central management system (like Grandstream GDMS) or a local PBX. For manual configuration, you may need to access the phone's web interface. Consult your network administrator for specific SIP account details and network settings.
- SIP Account Registration: The phone will attempt to register with the configured SIP server. A successful registration is usually indicated by a steady green LED light.
- Network Settings: Ensure the phone obtains an IP address via DHCP or is configured with a static IP address as per your network requirements.
Operating Instructions
Making Calls
- Lift the Handset: Pick up the handset. You should hear a dial tone.
- Dial the Number: Use the keypad to enter the desired phone number.
- Initiate Call: The call will typically connect automatically after dialing, or you may need to press the # key depending on your system configuration.
Answering Calls
When the phone rings, simply lift the handset to answer the incoming call.
Using Speed Dial Keys
The GHP611 features 10 speed dial keys for quick access to frequently called numbers or services.
- To Use: Lift the handset and press the desired speed dial key. The phone will automatically dial the pre-programmed number.
- Programming: Speed dial keys are typically programmed by your system administrator via the phone's web interface or GDMS.
Programmable Keys
The phone includes 3 programmable keys that can be configured for various functions such as call transfer, call hold, or specific service access. The functionality of these keys is determined by your system administrator.

Figure 3: Close-up of the GHP611 keypad, highlighting the speed dial and programmable keys for quick access to functions.
Maintenance
To ensure the longevity and optimal performance of your Grandstream GHP611 phone, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the phone's surface. Avoid using liquid cleaners, aerosols, or harsh chemicals, as they may damage the device.
- Environment: Keep the phone in a dry environment, away from direct sunlight, excessive heat, and moisture.
- Cable Management: Ensure all cables are securely connected and not tangled or pinched, which could lead to damage or signal loss.
- Software Updates: Firmware updates are typically managed by your system administrator through Grandstream GDMS to ensure the phone has the latest features and security patches.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Dial Tone |
|
|
| Cannot Make/Receive Calls |
|
|
| Poor Audio Quality |
|
|
Specifications
| Feature | Detail |
|---|---|
| Model | Grandstream GHP611 |
| SIP Accounts | 2 Lines / 2 SIP Accounts |
| Connectivity | Built-in Wi-Fi |
| Speakerphone | High-Definition Speakerphone on Handset |
| Speed Dial Keys | 10 |
| Programmable Keys | 3 |
| Audio Codec | Full-band Opus |
| Jitter Resilience | Up to 30% packet loss tolerance |
| Management System | Grandstream GDMS Support |
| Dimensions (L x W x H) | 21.1 x 53 x 44 cm |
| Weight | 440 grams |
| Color | Black |
| Power Source | Corded Electric (PoE capable) |
Warranty and Support
For warranty information and technical support, please refer to the official Grandstream website or contact your authorized Grandstream reseller. The Grandstream Device Management System (GDMS) provides centralized management and monitoring for Grandstream endpoints, which can assist with support and troubleshooting.
Manufacturer: Grandstream Networks, Inc.
First Available Date: February 20, 2024





