Billion BiPAC 8700VAX(L)-1600 User Manual page 219

Display Name: Enter a display name to identify the phone, like indicating the phone usage.
User Name: The user name user registers in the sip server.
Password: The password user registers in the sip server.
Authentication ID: It is an authentication code required for some ISP, and can be left empty if not
required.
DTMF Method: DTMF stands for "Dual-Tone Multi-Frequency", and is a telecommunication signaling
over analog telephone lines widely used between telephone handsets and other communication
devices and the switching center. "DTMG method" provides ways to transmit DTMF for VoIP, such as
RFC 2833, SIP Info, SIP Info (short), Inband and Auto, and RFC2833 is the widely used one.
Preferred codec#1,2,3,4,5: Codec is known as Coder-Decoder used for data signal conversion. Set
the priority of voice compression; Priority 1 owns the top priority.
G.711A-LAW: It is a basic non-compressed encoder and decoder technique. A-LAW uses
pulse code modulation (PCM) encoder and decoder to convert 13-bit linear sample into 8-bit
value.
G.729a: It is used to encoder and decoder voice information into a single packet which
reduces the bandwidth consumption.
G.726_32: It is an ITU-T ADPCM speech codec standard covering the transmission of voice
at rates of 32kbit/s.
G.722: G.722 is an ITU standard codec that provides 7 kHz wideband audio at data rates from
48, 56 and 64 kbit/s. G.722 sample audio data at a rate of 16 kHz (using 14 bits), double that
of traditional telephony interfaces, which results in superior audio quality and clarity.
G.711Mu-Law: It is a basic non-compressed encoder and decoder technique. μ-LAW uses
pulse code modulation (PCM) encoder and decoder to convert 14-bit linear sample.
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