User Manual
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DP750/DP720 User Guide 
Version 1.0.3.37 
Table 3: DP750 Technical Specifications 
Air Interface 
Telephony standards: DECT 
Frequency bands: 
▪  1880 – 1900 MHz (Europe), 1920 – 1930 MHz (US) 
▪  1910 – 1920 MHz (Brazil), 1786 – 1792 MHz (Korea) 
▪  1893 – 1906 MHz (Japan), 1880 – 1895 MHz (Taiwan) 
Number of channels: 10 (Europe), 5 (US, Brazil or Japan), 3 (Korea), 8 (Taiwan) 
Range: up to 300 meters outdoor and 50 meters indoor 
Peripherals 
5 LED indicators: Power, Network, Register, Call, DECT 
Reset button, Pairing/Paging button 
One 10/100 Mbps auto-sensing Ethernet port with integrated 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, IPv6 (pending) 
Voice Codecs 
G.711µ/a-law,  G.723.1,  G.729A/B,  G.726-32,  iLBC,  G.722,  OPUS, 
G.722.2/AMR-WB  (special  order),  in-band  and  out-of-band  DTMF  (in  audio, 
RFC2833, SIP INFO), VAD, CNG, PLC, AJB 
Telephony Features 
Hold, transfer, forward, 3-way conference, downloadable phonebook (XML, LDAP, 
up to 3000 entries), call waiting, call log (up to 300 records), auto answer, flexible 
dial plan, music on hold, server redundancy and fail-over 
Sample 
Applications 
Currency (pending) 
QoS 
Layer 2 QoS (802.1Q, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS) 
Security 
User  and  administrator  level  access  control,  MD5  and  MD5-sess  based 
authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 
802.1x media access control, DECT authentication & encryption 
Multi-language 
English,  Czech,  German, Spanish, French, Arabic, Hebrew, Italian, Russian, 
Netherlands,  Japanese,  Polish,  Chinese  Simple,  Chinese  Tradition,  Korean, 
Portuguese, Slovakian, Serbian, Swedish and Turkish. 
Upgrade/ 
Provisioning 
Firmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using  TR-069 or 
AES encrypted XML configuration file 
Multiple SIP 
Accounts 
Up to ten (10) distinct SIP accounts per system 
Each handset may map to any SIP account(s) 
Each SIP account may map to any handset(s) 
Ring Group 
Flexible options when multiple handsets share the same SIP account 
▪  Circular Mode: all phones ring sequentially, starting with the phone after 
the one which rang last. 
▪  Linear  Mode:  all  phones  ring  sequentially  in  the  predetermined  order, 
starting with the first phone each time. 










