Set Up Your Phone To Use Opus Codec Narrowband; Nat Transversal With Phones - Cisco 8800 Series Manual

Set Up Your Phone to Use OPUS Codec Narrowband

Parameter
SIP URI
Set Up Your Phone to Use OPUS Codec Narrowband
To improve bandwidth in your network, you can set up your phones to use the narrowband OPUS codec. The
narrowband codec won't conflict with the wideband codec.
Before you begin
Access the Phone Web Interface, on page 104
Procedure
Step 1 Select Voice > Ext <n> where (n) is the number of the extension to configure.
Step 2 In the SIP Settings section, set Use low-bandwidth OPUS to Yes.
Step 3
Click Submit All Changes.

NAT Transversal with Phones

Network Address Translation (NAT) allows multiple devices to share a single, public, routable, IP address
to establish connections over the Internet. NAT is present in many broadband access devices to translate public
and private IP addresses. For VoIP to coexist with NAT, NAT traversal is required.
Not all service providers provide NAT traversal. If your service provider does not provide NAT traversal,
you have several options:
• NAT Mapping with Session Border Controller: We recommend that you choose an service provider
Cisco IP Phone 8800 Series Multiplatform Phone Administration Guide for Release 11.3(1) and Later
384
that supports NAT mapping through a Session Border Controller. With NAT mapping provided by the
service provider, you have more choices in selecting a router.
Description
The parameter by which the user agent will identify
itself for this line. If this field is blank, the actual URI
used in the SIP signaling should be automatically
formed as:
sip:UserName@Domain
where UserName is the username given for this line
in the User ID, and Domain is the domain given for
this profile in the User Agent Domain. If the User
Agent Domain is an empty string, then the IP address
of the phone should be used for the domain.
If the URI field is not empty, but if a SIP or SIPS URI
contains no @ character, the actual URI used in the
SIP signaling should be automatically formed by
appending this parameter with an @ character
followed by the IP address of the device.
Cisco IP Phone Installation