Cisco UC320W Administration Manual page 22

• Account ID: Enter the account ID, which is usually the main phone number for the trunk. This
number may be used as the calling line ID for your outbound calls, if allowed by your service
provider.
• Authentication ID: If your provider requires SIP authentication, enter the authentication code for
your account. Typically this code is case sensitive.
• Password: If your provider requires SIP authentication, enter the password for your account.
Typically this password is case sensitive.
• SRV Record Lookup: If required by your provider, check this box to use DNS SRV lookup for
Proxy and Outbound Proxy, or leave this box unchecked to disable SRV lookup.
• SRV Auto Prefix: If you enabled SRV Record Lookup, you can check this box to automatically
prepend the Proxy or Outbound Proxy name with _sip._udp when performing a DNS SRV
lookup on that name. Uncheck the box not to use this service.
• Local SIP Port: Displays the local port number that is used for this service. This information is for
your reference, if needed.
• NAT Mapping: Check this box if NAT mapping is not provided by your SIP provider and therefore
local NAT mapping is required. Then specify the NAT settings in the Systemwide SIP
Parameters section. Note: Network Address Translation (NAT) is a function that allows multiple
devices on a private network to share the same public, routable, IP address to establish Internet
connections. To enable VoIP to co-exist with NAT, some form of NAT traversal is required.
Some service providers provide NAT traversal, but some do not. If you are unsure, check with
your SIP provider.
• Send NAT Keep Alive: Check this box to allow the Cisco UC320W to periodically send Keep
Alive messages to the server to maintain the current NAT mapping. Note: This option is
available if you check the NAT Mapping box.
Note: Other NAT settings are configured in the Systemwide SIP Parameters section below.
Mediatrix Gateway Settings
This section is available after you select a provider. To enter the settings, click Settings. To hide the
settings, click the button again. Requirements vary by provider; refer to the information from your
provider.
Note: You can install up to two Mediatrix 4400 Digital Gateways. Connect the Cisco UC320W and the
BRI gateway to a secure router such as Cisco SA500. For application notes, visit the Small Business
Support Community.
• Description: Enter a short description of this service for your reference.
• Mediatrix IP Address: Enter the IP address for the Mediatrix server.
• Call Capacity: Select the maximum number of concurrent calls that are supported on this trunk
by your provider.
• Prefix dialed numbers with: Check the box if this feature is required by the SIP provider. When
this feature is enabled, the system automatically inserts the appropriate dialing prefix to an
external number (such as +1 in the US or +44 in the UK, based on the specified Regional
Settings).
• Account Phone Number: Enter the main phone number for your BRI service.
• Launch Mediatrix Interface: Click this link to open the Mediatrix configuration tool (not a Cisco
product).
• Local SIP Port: Displays the local port number to be used for this service. You will need this port
number when you configure the Mediatrix Gateway to interoperate with the Cisco UC320W.
Systemwide SIP Parameters
This section of the page is available after you choose a provider. These settings apply to all SIP
providers.
• Codec: Keep the default setting or choose the codec for outbound calls. This list includes the
appropriate codecs for your region. Tip: G711 provides better audio quality but uses more
bandwidth than G729. With G729, audio is compressed and may be slightly distorted, most
noticeably when music is played.
• Outbound FAX: Choose a fax transmission setting.
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