Grandstream Networks HT503 User Manual

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HT503 User Manual
G723 Rate:
This defines the encoding rate for G723 vocoder. Default setting is 6.3kbps.
iLBC Frame Size:
This sets the iLBC size in 20ms or 30ms
iLBC Payload Type:
This defines payload type for iLBC. Default value is 97. The valid range is
between 96 and 127.
AAL2-G726-16
Payload Type
Defines payload type for AAL2-G726-16. Default value is 100. Range is
from 96 to 127.
AAL2-G726-24
Payload Type
Defines payload type for AAL2-G726-24. Default value is 99. Range is
from 96 to 127.
AAL2-G726-32
Payload Type
Defines payload type for AAL2-G726-24. Default value is 104. Range is
from 96 to 127.
AAL2-G726-40
Payload Type
Defines payload type for AAL2-G726-40. Default value is 103. Range is
from 96 to 127.
VAD
Default is No. VAD allows detecting the absence of audio and conserves
bandwidth by preventing the transmission of “silent packets” over the
network.
Symmetric RTP
Default is No. When set to “Yes” the device will change the destination to
send RTP packets to the source IP address and port of the inbound RTP
packet last received by the device.
Fax Mode
T.38 (Auto Detect) FoIP by default, or fax Pass-Through (must use
PCMU/PCMA)
Fax Tone Detection
Mode
Default is Callee. This decides whether Caller or Callee sends out the re-
invite for T.38 or Fax Pass-Through.
Jitter Buffer Type
Select either Fixed or Adaptive based on network conditions.
Jitter Buffer Length
Select Low, Medium, or High based on network conditions.
SRTP Mode
Secure RTP protocol used for media transmission over VoIP. Disabled by
default. Other modes are: enabled but not forced & enabled and forced.
Crypto Life Time
Default is Enabled. Allows user to enable or disable Crypto life time when
using SRTP.
Caller ID Scheme
Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, & NTT Japan
FSK Caller ID
minimum RX Level
(dB)
An adjustable value for the Caller ID signal to help this device to recognize
Caller ID from different networks. (-96 -0dB. Default -40dB)

Grandstream Networks HT503 Specifications

General

Brand	Grandstream Networks
Model	HT503
Category	Telephone Accessories
Language	English