HandyTone -286 User Manual

Grandstream Networks, Inc.

 

 

 

 

 

 

 

 

 

 

 

 

 

G723 Rate:

 

This defines the encoding rate for G723 vocoder. By default, 6.3kbps rate is

 

 

 

 

chosen.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

iLBC frame size

 

This defines the size of the iLBC codec frame. The default setting is 20ms.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

iLBC payload type

 

This defines the iLBC payload type. The default setting is 97. The valid range

 

 

 

 

is between 96 and 127.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Silence Suppression

 

This controls the silence suppression/VAD feature of G723 and G729. If set to

 

 

 

 

“Yes”, when a silence is detected, small quantity of VAD packets (instead of

 

 

 

 

audio packets) will be sent during the period of no talking. If set to “No”, this

 

 

 

 

feature is disabled.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voice Frames per

 

This field contains the number of voice frames to be transmitted in a single

 

 

TX

 

packet. When setting this value, the user should be aware of the requested

 

 

 

 

packet time (used in SDP message) as a result of configuring this parameter.

 

 

 

 

This parameter is associated with the first vocoder in the above vocoder

 

 

 

 

Preference List or the actual used payload type negotiated between the 2

 

 

 

 

conversation parties at run time.

 

 

 

 

 

 

e.g., if the first vocoder is configured as G723 and the “Voice Frames per TX”

 

 

 

 

is set to be 2, then the “ptime” value in the SDP message of an INVITE request

 

 

 

 

will be 60ms because each G723 voice frame contains 30ms of audio.

 

 

 

 

Similarly, if this field is set to be 2 and if the first vocoder chosen is G729 or

 

 

 

 

G711 or G726, then the “ptime” value in the SDP message of an INVITE

 

 

 

 

request will be 20ms.

 

 

 

 

 

 

If the configured voice frames per TX exceeds the maximum allowed value, the

 

 

 

 

phone will use and save the maximum allowed value for the corresponding first

 

 

 

 

vocoder choice. The maximum value for PCM is 10(x10ms) frames; for G726,

 

 

 

 

it is 20 (x10ms) frames; for G723, it is 32 (x30ms) frames; for G729/G728, 64

 

 

 

 

(x10ms) and 64 (x2.5ms) frames respectively.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fax Mode

 

T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec

 

 

 

 

PCMU/PCMA)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Layer 3 QoS

 

This field defines the layer 3 QoS parameter which can be the value used for IP

 

 

 

 

Precedence or Diff-Serv. Default value is 48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Layer 2 QoS

 

This setting includes two fields. The 802.1Q/VLAN Tag contains the value

 

 

 

 

used for layer 2 VLAN tag. Default setting is blank. And 802.1p priority value

 

 

 

 

contains the value of the priority value.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Allow incoming SIP

 

If set to “Yes”, the device will ignore any SIP message that does not come from

 

 

messages from SIP

 

the IP address (Source IP in the IP header) that it is registered to. Default is

 

 

proxy only

 

No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Use DNS SRV

 

This parameter controls whether the IP phone supports the DNS SRV route

 

 

 

 

function.

 

 

 

 

 

 

 

 

 

 

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Grandstream Networks 286 G723 Rate, ILBC frame size, ILBC payload type, Silence Suppression, Voice Frames per, Fax Mode