Grandstream DP755 DECT VoIP Base Station, 20 SIP accounts, 20 lines,1x Ethernet 10/100 PoE, 5V/1A Micro-USB PS

Radio interface
Communication standards: DECT
Frequency ranges:
1880-1900 MHz (Europe), 1920-1930 MHz (USA),
1910-1920 MHz (Brazil), 1786-1792 MHz (Korea),
1893-1906 MHz (Japan), 1880-1895 MHz (Taiwan)
Number of channels: 10 (Europe), 5 (USA, Brazil, Japan), 3 (Korea),
8 (Taiwan)
Outdoor coverage area: up to 400 m (DP730), up to 350 m (DP722/DP720)
Indoor coverage area: up to 50 m

External elements
Three LED indicators: power, network,
paging/pairing button DECT
One 10/100 Mbps Ethernet port with auto-negotiation and PoE


Protocols/standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A-record,
SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE, LLDP-MED, LDAP, TR-069,
802.1x, TLS, SRTP

Speech codecs
G.711μ/a-law, G.723.1, G.729A/B, G.726-32, iLBC, G.722, OPUS, G.722.2/AMR-WB
(spec.), in-band and out-of-band DTMF (in RFC2833 audio signal, SIP INFO),
VAD, CNG, PLC, AJB

Telephony functions
Hold, transfer, forwarding, conference with three participants,
downloadable phonebook (XML, LDAP, up to 3,000 entries), call waiting
, call log (up to 1,500 entries), answering machine, flexible configuration of subscriber
groups, switching to a backup server in case of failure

Quality of service
Layer 2 QoS (802.1Q, 802.1P) and Layer 3 QoS (ToS, DiffServ, MPLS)

Safety
User and administrator level access control
, MD5 and MD5-sess authentication, 256-bit AES encryption configuration file,
TLS, SRTP, HTTPS, 802.1x-based media access control,
DECT authentication and encryption

Multiple languages
English, Czech, German, Spanish, French, Hebrew, Italian,
Dutch, Polish, Portuguese, Russian, Turkish, Arabic, Chinese
Simplified, Chinese Traditional, Japanese, Korean, Slovak,
Serbian

Update/Setup
Firmware update via TFTP/HTTP/HTTPS or via local download
HTTP, bulk configuration using TR-069 or an XML configuration file
with AES encryption

Multiple SIP accounts
Up to 20 separate SIP accounts per system
Each handset can be linked to 20 SIP accounts
Each SIP account can be linked to any handset

Call Groups
Extensive options for configuring multiple handsets in one SIP account.
Parallel mode: all phones ring at the same time; when one
phone answers, new calls can be made from the rest.
Handset mode: Multiple handsets are linked to one account, but all incoming
calls are routed to one handset.

Nutrition and
energy efficiency
Universal power supply: Input: 100-240 VAC, 50/60 Hz;
Output: DC 5V, 1 A;
Micro-USB connector;
PoE: IEEE802.3af, Class 1; 0.44–3.84 W

Package Contents Basic Module, Universal Power supply, Ethernet Cable, Quick
Start Guide, GLP license

Dimensions (H × W × D)
140,31 x 64,98 x 105 mm

Weight
Base module: 140 g; universal power supply: 50 g; package: 370 g

Temperature and humidity
Operation: -10...+45 °C; storage: -20...+60 °C Humidity: 10-90 %
(non-condensing)
Accordance
FCC: FCC, Part 15B; FCC, Part 15D; MPE; FCC ID
CE: EN 55032; EN 55035; EN 61000-3-2; EN 61000-3-3; EN 60950-1; EN 301 489-1/-6;
EN 301 406; EN 50385; RED NB certification
RCM: AS/NZS 32; AS/NZS 60950.1 ANATEL: ANATEL, EAC, UL (adapter)