Configure The Sip Transport; Block Non-Proxy Sip Messages To A Phone - Cisco 6800 Series Administration Manual

Configure the SIP Transport

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Step 4 Specify the encrypted Primary Request URL to the main georedundant server. This location information
server returns the location for this phone.
For example:
https://prod.blueearth.com/e911Locate/held/held_request.action
Step 5 Specify the encrypted Secondary Request URL for the backup server that can return location information.
For example:
https://prod2.blueearth.com/e911Locate/held/held_request.action
Step 6 Click Submit All Changes.
Configure the SIP Transport
For SIP messages, you can either specify the transport protocol of your choice, or, you can let the phone select
the appropriate protocol automatically, for each extension.
When you set up automatic selection, the phone determines the transport protocol based on the Name Authority
Pointer (NAPTR) records on the DNS server. The phone uses the protocol specified in the record that has the
lowest order and preference. When there are multiple records with the same order and preference, the phone
looks for a protocol within the records, in the following order of preference: 1. UDP, 2. TCP, and 3. TLS.
The phone uses the first protocol that it finds, in that order of preference.
Before you begin
Access the phone administration web page. See
Procedure
Step 1 Select Voice > Ext(n), where n is an extension number.
Step 2
In the SIP Settings section, set the SIP Transport parameter as described in
Step 3 Click Submit All Changes.

Block Non-Proxy SIP Messages to a Phone

You can disable the ability of the phone to receive incoming SIP messages from a non-proxy server. When
you enable this feature, the phone only accepts SIP messages from:
• proxy server
• outbound proxy server
• alternative proxy server
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
186
Access the Phone Web Page, on page
Phone Administration
92.
SIP Settings, on page 277.