Voice - Linksys SPA9000 Administration Manual

Signaling
Signaling Port
RTP
RTP Port
IP Tos/DiffServ
Call Signaling Packets
RTP Packets
Session
Enable Session Timer
Desired Refresh Time
Minimum Refresh Time
Setup tab

Voice

NOTE: The default settings should be sufficient in most use cases. These settings should be
adjusted only after consultation with a service technician for the telephone company. It is
essential that these settings are compatible with those of the Central Office.
Voice Codecs
Preferred Codecs
Preferred Codec
Voice Codecs
Packetization
VAD
Linksys Voice System Administration Guide
The UDP port that the SPA400 uses to listen for incoming call setup
requests
Default: 5060
The base UDP port for the block of UDP ports that that the SPA400 uses
to send and receive RTP and RTCP packets
Default: 10000
TOS field in IP header for outgoing SIP packets
Default: 68
TOS field in IP header for outgoing RTP/RTCP packets
Default: b8
Enables the SPA400 to encode the Timer header in all INVITE requests
for ringing timeout (checked by default)
Desired session timer in seconds (0 by default)
Minimum value of the session timer in seconds (0 by default)
The preferred voice codec that SPA400 uses to negotiate with remote
VoIP devices to determine the voice codec for a call: G.711U, G.711A, or
G.729
The packetization time in milliseconds for each codec: G.711U, G.711A,
G.729
Voice Activity Detection (OFF or ON)
Default: OFF
Setup
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