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Using the WebUI
53
VSP726A Administrator and Provisioning Manual
Quality of Service
Signaling Settings
Select the codec to be used sixth during a call if the
previous codec fails.
Select the codec to be used last during a call if the previous
codec fails.
Enable voice encryption
(SRTP)
Select to enable secure RTP for voice packets.
When G.729a/b is enabled, select to enable G.729
Annex B, with voice activity detection (VAD) and
bandwidth-conserving silence suppression.
Preferred Packetization
Time (ms)
Select the packetisation interval time.
DTMF Payload Type
Set the DTMF payload type for in-call DTMF from 96–127.
Setting
Description
Enter the Differentiated Services Code Point (DSCP) value
from the Quality of Service setting on your router or switch.
Enter the Differentiated Services Code Point (DSCP) value
from the Quality of Service setting on your router or switch.
Setting
Description
Enter the local SIP port.
Select the SIP transport protocol:
UDP (User Datagram Protocol) is generally less prone
to latency, but SIP data may be subject to network
congestion.
TCP (Transmission Control Protocol) is the most
reliable protocol and includes error checking and
delivery validation.
TLS (Transport Layer Security)—the VSP726A supports
secured SIP signalling via TLS. Optional server
authentication is supported via user-uploaded
certificates. TLS certificates are uploaded using the
configuration file. See
and consult your service
provider.
Setting
Description
VoIPon www.voipon.co.uk [email protected] Tel: (0)330 088 0195 Fax: +44 (0)1245 808299