- General Information
 - Manufacturer
 - Grandstream Networks, Inc
 
- Manufacturer Website Address
 - http://www.grandstream.com
 
- Brand Name
 - Grandstream
 
- Product Series
 - GXP
 
- Product Type
 - IP Phone
 
The GXP2135 is the ideal selection for busy users who value call control, productivity and usability, and manage medium to heavy call volumes. Equipped with 8 lines and 4 SIP accounts, a 2.8 inch color LCD display, and 32 digital speed dial/BLF keys, the GXP2135 enables quick and powerful usability.
As all Grandstream IP phones do, the GXP2135 features state-of-the-art security encryption technology (SRTP and TLS). The GXP2135 supports a variety of automated provisioning options, including zero-configuration with Grandstream's UCM series IP PBXs, encrypted XML files and TR-069, to make mass deployment extremely easy.
- Technical Information
 - Handset Connectivity Technology
 - Corded/Cordless
 
- Base Unit Connectivity Technology
 - Corded
 
- IP Phone Technology
 - VoIP
 
- Wireless Technology
 - Bluetooth
 
- Total Number of Phone Lines
 - 8
 
- Caller ID
 - Yes
 
- Speakerphone
 - Yes
 
- Display & Graphics
 - Display Colour
 - Colour
 
- Interfaces/Ports
 - Network (RJ-45)
 - Yes
 
- Number of Network (RJ-45) Ports
 - 2
 
- USB
 - Yes
 
- PoE (RJ-45) Port
 - Yes
 
- Management & Protocols
 - Communication Protocols
 - SIP
 
- TCP
 
- UDP
 
- RTCP
 
- RTP
 
- ARP
 
- ICMP
 
- DHCP
 
- PPPoE
 
- NTP
 
- STUN
 
- LLDP
 
- LDAP
 
- TLS
 
- SRTP
 
- IPv6
 
- Power Description
 - Power Source
 - AC Adapter
 
- Physical Characteristics
 - Product Color
 - Black
 
- Form Factor
 - Wall Mountable
 
- Height
 - 85 mm
 
- Width
 - 201 mm
 
- Depth
 - 193 mm
 
- Weight (Approximate)
 - 850 g