Bukovel

The address (phone) book

The phone book have more than 400 cells.  User can view the address book, edit information, search for the subscriber, addition the new entries and edit existing ones or remote send the phone book .

 

Call by hotkeys

The six hotkeys can be associated with the subscribers in the address book.

 

Call with or without using a SIP-server

"Bukovel" supports the organization of a session with the SIP-server (SIP proxy / registrar) or without it (IP-subscriber).

 

Сall hold

During a call hold, the user can answer the incoming call or to create a new session with the other user. Hold option realize as a special hotkey.

 

Repeat the last call

Repeat last call option realize as a special hotkey. The last call  Information is saved in phone memory  after poweroff.

 

Сall list

IP-phone memorize  the last 50 calls and classification by type in special lists (incoming, outgoing, missed). Calls  information contains the name and address of the user, duration the call time, call direction, etc.

 

Сall forwarding

Call forwarding active call to another subscriber realize as a special hotkey. User can select a person to forwarding from address book or entered the manually. Call forwarding have two modes: "with talk" and "without talk".

 

Сall blocking

If you press a special hotkey, all incoming calls will lock.

 

Audio-conference on 4 caller

The IP-phone supports audio conference call (up to 4 users).

 

Microphone mute

Microphone mute realize as a special hotkey.

 

Adaptive jitter buffer

Attaining high quality telephony over Internet Protocol (IP) networks is one of the essential steps in the convergence of voice communication services. The main objective of transmitting real-time voice on IP networks is to overcome the variable inter-packet delay (jitter) encountered as the packets traverse the network. Adaptive jitter buffer was implemented to enable smooth playout of voice packets as the packets are received.

 

Voice activity detection (VAD)

Voice activity detection (VAD), also known as speech activity detection or speech detection, is a technique used in speech processing in which the presence or absence of human speech is detected. The main uses of VAD are in speech coding and speech recognition. It can facilitate speech processing, and can also be used to deactivate some processes during non-speech section of an audio session: it can avoid unnecessary coding/transmission of silence packets in Voice over Internet Protocol applications, saving on computation and on network bandwidth.

Protocols
IP v.4	RFC 791, RFC 826, RFC 1024, RFC 1812
SIP v.2	RFC 2543, RFC 3261
RTP, RTCP	RFC 3550
QoS	IEEE 802.1p/Q
Audiocodec
ITU-T	G.711alaw, G.711ulaw, G729, G723.1, G722
Physical Interfaces
100Base-FX, ММ, MTRJ	station equipment
100Base-FX, ММ, MTRJ	user equipment (PC, IP-phone)
RS-232, RJ-45	control terminal
Management
Vt100 terminal
Power
adapter	up to 10 Watt 170-240 V, 50-60 Hz
without adapter	up to 10 Watt 10-36 VDC
Safety
ІEC 60950:1999, DSTU 4113-2001
EMI/EMC
EMI/TEMPEST approved, ІEC 61000:2007, DSTU СISPR 22:2007, DSTU СISPR 24:2008
Environmental
Operational temperature	up 5° С to 40° С
Storage temperature	up -10° С to 50° С
Humidity	up to 80% (non-condensing 25°С)
Dimensions
250 х 254 х 153 mm (W х L х H)
Weight
1,3 кг

Bukovel