Polycom 1725-11530-310 ユーザーズマニュアル

Administrator’s Guide SoundPoint IP / SoundStation IP 

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Configuration changes can performed locally:

The three optional levels of security for validating incoming network signaling 

are: 

• Source IP address validation

• Digest authentication

• Source IP address validation and digest authentication
Configuration changes can performed centrally at the boot server:

Secure Real-Time Transport Protocol (SRTP) provides means of encrypting the 

audio stream(s) of VoIP phone calls to avoid interception and eavesdropping 

on phone calls.
For detailed configuration instructions, refer to “Technical Bulletin 25751: 

http://www.polycom.com/usa/en/support/voice/soundpoint_ip/VoIP_T

echnical_Bulletins_pub.html

 .

Configuration files (excluding the master configuration file), contact 

directories, and configuration override files can all be encrypted.

Local Phone User 
Interface

The custom certificate can be specified and the type of certificate to 
trust can be set under the Settings menu. 

Configuration File: 
sip.cfg

Specify the type of validation to perform on a request-by-request 
basis, appropriate to specific event types in some cases.

For more information, refer to 

 on page 

.

The SoundPoint IP 300 and 500 phones will always fail at decrypting files. These 
phones will recognize that a file is encrypted, but cannot decrypt it and will display 
an error. Encrypted configuration files can only be decrypted on the SoundPoint IP 
301, 320, 330, 430, 501,550, 560, 600, 601, 650, and 670 and the SoundStation IP 
4000, 6000, and 7000 phones.

The master configuration file cannot be encrypted on the boot server. This file is 
downloaded by the bootROM that does not recognize encrypted files. For more 
information, refer to 

 on page 

.