Chapter 23 Voice
VMG/XMG Series User’s Guide
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Each field is described in the following table.
Table 121 VoIP > SIP > SIP Account > Add new account/Edit
LABEL DESCRIPTION
SIP Account Selection
SIP Account
Selection
This field displays ADD_NEW if you are creating a new SIP account or the SIP account
you are modifying.
SIP Service Provider Association
SIP Account
Associated with
Select the SIP service provider profile to use for the SIP account you are configuring
in this screen. This field is read-only when you are modifying a SIP account.
General
Enable SIP
Account
Select this if you want the Zyxel Device to use this account. Clear it if you do not
want the Zyxel Device to use this account.
SIP Account
Number
Enter your SIP address. In the full SIP URI, this is the part before the @ symbol. You can
use up to 127 printable ASCII characters.
Authentication
Username Enter the user name for registering this SIP account, exactly as it was given to you.
You can use up to 95 printable ASCII characters.
Password Enter the user name for registering this SIP account, exactly as it was given to you.
You can use up to 95 printable ASCII Extended set characters.
URL Type
URL Type Select whether or not to include the SIP service domain name when the Zyxel
Device sends the SIP address.
SIP - include the SIP service domain name.
TEL - do not include the SIP service domain name.
Voice Features
Primary
Compression Type
Secondary
Compression Type
Third Compression
Type
Select the type of voice coder/decoder (codec) that you want the Zyxel Device to
use.
G.711 provides high voice quality but requires more bandwidth (64 kbps). G.711 is
the default codec used by phone companies and digital handsets.
• G.711a is typically used in Europe.
• G.711u is typically used in North America and Japan.
G.726-24 operates at 24 kbps.
G.726-32 operates at 32 kbps.
G.722 is a 7 KHz wideband voice codec that operates at 48, 56 and 64 kbps. By using
a sample rate of 16 kHz, G.722 can provide higher fidelity and better audio quality
than narrowband codecs like G.711, in which the voice signal is sampled at 8 KHz.
The Zyxel Device must use the same codec as the peer. When two SIP devices start a
SIP session, they must agree on a codec.
Select the Zyxel Device’s first choice for voice coder/decoder.
Select the Zyxel Device’s second choice for voice coder/decoder. Select None if
you only want the Zyxel Device to accept the first choice.
Select the Zyxel Device’s third choice for voice coder/decoder. Select None if you
only want the Zyxel Device to accept the first or second choice.
Speaking Volume
Control
Select the loudness that the Zyxel Device uses for speech that it sends to the peer
device.
Listening Volume
Control
Select the loudness that the Zyxel Device uses for speech that it receives from the
peer device.
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