Technical Specifications
Audio
Codecs
• G.711 A-law, u-law
• G.722 (wideband)
• G.723, G.726, G.729ab, GSM 6.10 (FR)
Ringtones • Built-in assignable ringtones
Other features • Comfort noise generator (CNG)
• Voice activity detection (VAD)
Display
Size (inch) • 5”
Resolution • 480 x 272 pixel
Type • TFT color display
Other features • Continuously adjustable (P855BW IP PRO only)
Keyboard
Keys • 4 context sensitive keys
Keys • 10 programmable line / function keys with multicolor LEDs
Keys • Dedicated keys for: Message, directory, call history, transfer, hold,
conference
Keys • Audio keys with LED indication: Mute, speakerphone, headset
Keys • Volume key
Keys • 5-way navigation key
Keys • Cancel key
Network
specifications
Configuration
• SIP (RFC3261)
• DHCP, NTP
• HTTP / HTTPS / TFTP
• HTTPS server / client
• Transport layer security (TLS)
• SRTP (RFC3711), SIPS, RTCP
• 802.1X Authentication and EAPOL
• VPN support
• LLDP-MED, RTCP-XR
• Password-protected web interface
IP • Dual Stack IPv4 / IPv6
• VLAN (IEEE 802.1Q)
Provisioning
• Automatic loading of settings via HTTP / HTTPS / TFTP
• DHCP Options 66/67
• Gigaset Redirect and Provisioning Environment (GRAPE) support
• Remote management via TR-069 / TR-111
• Configurable through web interface
Connectivity
WLAN standard • WLAN IEEE 802.11n/ac
LAN connection
• 2x RJ45-8P8C Gigabit Ethernet port
• Power over Ethernet (PoE)
• IEEE 802.3af, class 3 / IEEE 802.3az (optional via software)
Bluetooth connection • Bluetooth 5.2 (P855BW IP PRO only)
Headset connection • RJ9-4P4C socket (headset available separately); support for
Gigaset EHS Adapter (optional accessory)
USB connection • 2x USB 2.0 host ports (P850W IP PRO only), 1x USB 2.0 host
port (P855BW IP PRO only), Type A, Hi / Full / Low-speed
Handset • RJ9-4P4C socket
• Hearing aid compatible (HAC) handset
Interoperability • Interoperable with all major IP PBX platforms
Phonebook Contacts • LDAP (Directory)
• XML browser
Address book • Local directory with 2000 entries
Telephony
VoIP • 12 SIP identities / accounts
Call groups • 3-way conferencing on the phone
Localization • Language, time, dial tone
Other features • Menu-driven user interface
• Multiple language support
Dial functions
Functions
• Call forwarding
• Caller identification
• Call waiting
• Call lists for dialed, received, missed calls
• Call completion (busy / unreachable) (if supported by PBX)
• Call park, call unpark (if supported by PBX)
• Speed dialing
• Hold
• Music on hold (if supported by PBX)
• Automatic redial on busy
• Auto-answer
• Blind and attended transfer
• Extension monitoring, call pickup (if supported by PBX)
• Multicast paging
• URL dialing
• Local dial plan
• Client matter code (CMC) (if supported by PBX)
Dialing procedure • DTMF in-band / out-of-band / SIP-INFO
Call protection
Blocking list • Call blocking (deny list)
• DND mode (do not disturb)
Dial lock • Keyboard lock
Signaling &
display indications
Incoming calls • Red LED for call indication / message waiting
Power
Power supply • PoE or 5Vdc power adapter (optional accessory), 10 Watts
Input voltage • 5V DC (SELV)
Dimensions &
weights
Desk phone
• Without foot stand: 243 x 210 x 82 mm (9.57″ x 8.27″ x 3.23″)
• With desk stand: 243 x 173 x 178 mm (9.57" x 6.8" x 7")
• Weight (approximately): 1.04 kg (2.3 lbs)
Ordering
information
Color • Gunmetal Black
Environmental
conditions
Ambient temperature • 0°C to 35°C (32°F to 95°F)
Storage temperature • -10°C to 45°C (14°F to 113°F)
Humidity • 5% to 95% (non-condensing)
Accessories Key module • Gigaset P800 KEY PRO for additional
freely programmable function keys
EHS adapter • Gigaset EHS Adapter
Power adapter • Gigaset 5Vdc power adapter
Scope of delivery
1x • Desk phone
1x • Foot stand
1x • Handset with cord
1x • Quick Start Guide
