User`s guide

Vigor2820 Series User’s Guide
189
Index (1-15) in Schedule - Enter the index of schedule profiles
to control the DND mode according to the preconfigured
schedules. Refer to section 3.8.2 Schedule for detailed
configuration.
Index (1-60) in Phone Book - Enter the index of phone book
profiles. Refer to section 3.11.1 DialPlan – Phone Book for
detailed configuration.
CLIR (hide caller ID) Check this box to hide the caller ID on the display panel of the
phone set.
Prefer Codec Select one of five codecs as the default for your VoIP calls. The
codec used for each call will be negotiated with the peer party
before each session, and so may not be your default choice. The
default codec is G.729A/B; it occupies little bandwidth while
maintaining good voice quality.
If your upstream speed is only 64Kbps, do not use G.711 codec.
It is better for you to have at least 256Kbps upstream if you
would like to use G.711.
Single Codec – If the box is checked, only the selected Codec
will be applied.
Packet Size-The amount of data contained in a single packet.
The default value is 20 ms, which means the data packet will
contain 20 ms voice information.
Voice Active Detector - This function can detect if the voice
on both sides is active or not. If not, the router will do
something to save the bandwidth for other using. Click On to
invoke this function; click off to close the function.
Default SIP Account You can set SIP accounts (up to six groups) on SIP Account
page. Use the drop down list to choose one of the profile names
for the accounts as the default one for this phone setting.
Play dial tone only when account registered - Check this box
to invoke the function.
FXO Feature Enable ISDN to VoIP (On-Net) Calls – Check this box to
make all the outgoing calls from ISDN line to be forwarded to
receivers by Internet.
Enable VoIP to ISDN (Off-Net) Calls –Check this box to
make all the incoming calls coming from Internet to be