The GHP Series of hotel phones feature the GHP621 , easy-to-use IP phones for any hotel room that can be programmed and customized based on the needs of hotels and their guests. The GHP620W and GHP621W models are equipped with integrated dual-band Wi-Fi to support wireless deployments. This Series features an HD speaker, 2 SIP accounts/lines, 6 programmable keys, 10 speed dial keys, 3-way voice conferencing, supports the full-band OPUS voice codec and provides an advanced jitter resilience algorithm that tolerates up to 30% packet loss without impacting voice quality. The GHP Series is supported by Grandstream’s Device Management System (GDMS), which provides a centralized interface to configure, provision, manage and monitor deployments of Grandstream endpoints. GHP series IP phones can be installed on desktop or wall-mounted and can be powered by PoE (GHP620/GHP621), power adapter (GHP620W/GHP621W), and USB Type-C charger. Thanks to a sleek and compact design, the GHP620/GHP620W and GHP621/GHP621W are the ideal fit for not only hotels but also apartments, dormitories, hospitals, retail and much more.

Core Features:

2 SIP accounts, 2 lines
GDMS online device management and provisioning
3-way audio conferencing for easy conference calls
Includes one 100Mbps network port with PoE
Swappable faceplate to allow for easy logo customization
Hearing Aid Compatibility (HAC)
Enterprise-level protection including secure boot,
dual firmware images and encrypted data storage
Color: Black

Weight	1.9 lbs
Dimensions	8.27 × 5.2 × 3.54 in
Brand	Grandstream
Phone Type	Desk

GENERAL INFO:

Model: GHP621
Package Content:
- GHP621 phone
- Handset with cord
- Base Stand
- Faceplate
- Quick Installation Guide
Color: Black
Base Stand: 1 Wall Mountable Base Stand
Power & Green Energy Efficiency:
- Input: 100~240Vac 50~60Hz
- Output: 12V/0.5A(6W)
USB: USB Type-C port for charging external devices (500mA MAX)

NETWORK INTERFACES:

One auto-negotiation 10/100 Mbps ethernet port integrated PoE Class 2
Protocols/Standards:
- SIP: SIP RFC3261, TCP/IP/UDP, RTP/RTCP, RTCP-XR, TLS, SRTP
- Network: IPv4, IPv6, HTTP/HTTPS, ARP, ICMP, DNS(A record, SRV, NAPTR), DHCP, SSH, TFTP,
  NTP, STUN, LLDP, TR-069, 802.1x
Advanced Features:
- Support for multicast paging and E911 service
- Support for advanced jitter-resilience algorithm
- Supports GDS Door Opening
QoS:
- Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Upgrade/Provisioning:
- Firmware upgrade via FTP/TFTP / HTTP / HTTPS, fast boot in 15 seconds, mass provisioning
  using GDMS/TR-069 or AES encrypted XML configuration file
Security:
- Secure boot, random default password, unique security certificate per device, administrator
  level passwords, 256-bit AES encrypted configuration file, SRTP, TLS, 802.1x media access
  control

TELEPHONY FEATURES:

Dial, Answer, Redial, Flash ,Hands-free, Voice Mail(with the server), Transfer, Conference, Hold
/Unhold, Mute /Unmute, flexible dial plan, Speed dial server redundancy & fail-over Call out
Voice Conferencing:
- 2 SIP accounts and lines, up to 3-way conference
Feature Keys:
- 26 keys, including:
  - 6 programmable keys
  - 12 Standard Phone Digits keys(0-9: speed dial keys configuration on web page, * , #)
  - 5 Function keys (Flash, Redial, Hands-free, Voice Mail, Hold)
  - 3 Volume Control keys, Up/Down/Mute(with red color LED)