Operation Manual

Getting Started
Feature Overview
Cisco SPA100 Series Administration Guide 6
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tip and the ring. This feature is useful for auto-answer equipment. You can configure
these settings in the Control Timer Values section of the Regional page.
• Event Logging
You can enable logging and select the relative priority of events to be logged. The
information can be sent to a Syslog Server. You can configure the syslog and debug
settings in the Miscellaneous Settings section of the System page.
• Encryption of SIP messages using SIP over TLS
You can enable SIP over Transport Layer Security (TLS) to encrypt the SIP messages
between the service provider and the your business. SIP over TLS relies on the widely-
deployed and standardized TLS protocol to encrypt the signaling messages. You can
configure the SIP Transport parameter in the SIP Settings section of the Line 1 and
Line 2 Settings (PHONE 1 and PHONE 2) page.
• Secure Calling using SRTP
Voice packets are encrypted by using Secure Real-Time Transport Protocol (SRTP).
This function is implemented on a standards basis (RFC4568). Secure call service
(Secure Call Serv) is enabled by default in the Supplementary Service Subscription
section of the Line 1 and Line 2 Settings (PHONE 1 and PHONE 2) page. When this
service is enabled, users can activate secure calling by pressing the star (*) key before
dialing a phone number. Alternatively, you can enable the Secure Call Setting to
encrypt all calls from a user’s phone. See the Supplementary Service Settings section
of the User 1 and User 2 page.