Grandstraem GXP-280 - SIP IP phone that supports 1 line, accommodates a dual-port switch 10/100 Mb/s, graphic LCD display 128x32 pixels.

Grandstraem GXP-280 - SIP IP phone of the next generation for small offices on 1 line with support for two one-hour capacities. Grandstream GXP-280 has a graphic LCD display of 128x32 pixels, 3 programmed XML keys and an integrated dual-port switch 10/100 Mb/s. The GXP280 gives wonderful clarity to the voice, a large number of different capabilities in telephone measurements, supports automatic verification, various protocols for border protection and is suitable for a large number of other SIP devices and SIP platforms of leading IP telephony providers. This device is ideally suited for the SOHO sector due to its rich functional set, the availability of 1 telephone line and a competitive price/capacity.

Protocols and standards:
- SIP RFC3261, SIP INFO, RFC2833, TCP / IP / UDP, RTP / RTCP, HTTP, ARP / RARP, ICMP, DNC (A record and SRV), DHCP, PPPoE, TFTP, NTP, STUN, SIMPLE, QoS L2: 802.1q, 802.1p, L3: ToS, DiffServ, MPLS;
- Upgrading software via TFTP / HTTP and downloading the hidden promotion file;

Merezhevy interfaces:
- Dual-port switch 10/100 MB/s with auto-wiring;

Graphic display:
- 128x32 pixels;

Keys:
- 3 XML context-independent programmed keys;
- 3 navigation / menu / key strength;
- 7 function keys;

Voice codecs:
- Support G.723.1, G.729 a/b, G.711 u/a-law, G.726, G.722, GSM, iLBC;

Telephone functions:
- Muffled sound;
- Morning;
- Forwarding;
- Tripartite conference;
- Upload phone book XML, LDAP up to 200 entries;
- Ochikuvannya vikliku;
- Call log;
- Automatic redial when the receiver is hung up;
- Automatic confirmation;
- Vanished ringtones;

Functions :
- Passwords for administrator and account manager;
- MD5 and MD5-sess authentication;
- AES;
- SRTP;

Other:
- Bagatomovna support;
- Living room with power supply AC 100-240 V, DC 5 V;
- Possibility of mounting on the wall.