Grandstream DP715 User Manual - Manual (Page 51)

Firmware version 1.0.0.33 DP715/DP710 User Manual Page 49 of 56
VAD Default is No. VAD allows detecting the absence of audio and conserves bandwidth by
preventing the transmission of “silent packets” over the network.
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.
G723 Rate This defines the encoding rate for G723 vocoder. Default setting is 6.3kbps.
Use First Matching
Vocoder in 200OK SDP Default is No. If set to “Yes”, device will include only the first match vocoder in its 200OK
response, otherwise it will include all match vocoders in same order received in INVITE.
iLBC Frame Size This sets the iLBC size in 20ms or 30ms
iLBC Payload Type Defines payload type for iLBC. Default value is 97. The valid range is between 96 and
127.
Voice Frames per TX This field contains the number of voice frames to be transmitted in a single 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.
Default is 2, the value range is 1-9.
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.
Table 15: HANDSETS SETTINGS
Page All Handsets This button will allow you to ring all the Handsetsregistered with the DP715Base Station
Desubscribe All
Handsets This button is used to de-register all the handset previously registered with the DP715
Base Station
Enable Subscription
Mode This button will allow you to set the DP715 into subscription mode in order to register a
new Handset.
Note: Subscription mode is automatically exited after 120 seconds.
Page Handset Allow you to ringa specific Handset registered with the DP715 Base Station
Desubscribe Handset This button is used to de-register the handset selected from the DP715 Base Station.
Enable Handset When set to Yes the Handset will be able to receive/make calls.
Hunting Group This feature enables the DP715 to register all existing Handsets with the same phone
number. Each incoming call will be routed to the first available handset in Linear;
Parallel or Shared linemode. User may configure all Handset as members of the same
Hunting Group or it may configure different handset combinations for more than one
Hunting Group. For example: Handset 1, 3 and 5 are members of the same Hunting
Group, the rest of the Handsets may have separate numbers and may be reached
independently. Any Handset, member of a Hunting Group that is not registered with a
SIP account, will be able to place outbound calls using the SIP credentials of the
primary Hunting Group Handset.
For example: Handset 1, 2, and 3 are members of the same Hunting Group. Handset 1
is registered with a SIP account. Handset 2, and 3 are not registered. Handset 2 and 3
will be able to place outbound calls using the SIP account of Handset 1. Select
appropriate value for Hunting Group feature. The original SIP account should be set to
Active while the group members should be set to the port number of the Active
Handset.
Example configuration of a Hunting group:
Handset #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"