• GRP2601/P/W – Quick Installation Guide
• GRP2602/P/W/G – Quick Installation Guide
• GRP2603/P – Quick Installation Guide
• GRP2604/P – Quick Installation Guide
• GRP_WM_A – Wall Mount Quick Installation Guide
• GRP2604 – BLF Template

• GRP260x Series – Administration Guide
• GRP26xx – Firmware Upgrade Guide
• Grandstream Device Certificate Update Guide
• GRP Series – Display Language Guide

• GRP260x Series – Quick User Guide
• GRP260x – Click2Dial Guide
• GRP260x Series – User Guide

• GRP Series – Security Guidelines

• GRP26xx – Auto-configuration “Plug and Play” Guide
• SIP Device Provisioning Guide
• Configuration Templates (XML/TXT)
• XML Configuration File Generator User Guide
• DHCP Options (Linux Server) Guide
• DHCP Options (Windows Server) Guide

• LDAP Guide
• Online Contacts Configuration Guide
• XML Phonebook Guide

• GRP260x – Virtual Extension User Guide
• GRP26xx – VPK (Virtual Multi-Purpose Keys) Guide
• GRP Series – BLF Guide
• GRP Series – Eventlist BLF Guide

• GRP26xx – DNS SRV Guide
• GRP26xx – VLAN Guide
• GRP26xx – Server Redundancy Guide
• SNMP Guide
• 802.1x Authentication Guide
• TR-069 Guide

• Account Sharing Guide
• SIP Presence
• GRP26xx – Multicast Paging Guide
• GRP Series – Hot Desking
• Advice of Charge (AoC) Guide
• GRP26xx Series – CTI Guide
• GRP260x Idle Screen Customization Guide
• SCEP Feature Guide

• GRP260x Series – Headset Compatibility

• GRP260x BroadWorks Xsi Directories and Call Logs
• GRP260x BroadWorks SCA Configuration Guide
• GRP260x BroadWorks BLF Configuration Guide
• ZoomPhone – Configuration Guide for GRP260x Series

• Connecting GDS37xx with GRP26xx

• GRP26xx & GBX20 Technical Bulletin – Power Consumption
• GRP260x Series – Energy Saving Guide