Aastra Telecom 41-001343-02 用户手册

41-001343-02 REV04 – 05.2014

Parameter – 
sips trusted certificates

Configuration Files
aastra.cfg, <model>.cfg, <mac>.cfg

Allows you to specify the Trusted Certificate files to use when the phone uses the TLS 
transport protocol to setup a call.

The Trusted Certificate files define a list of trusted certificates. The phone’s trusted list must 
contain the CA root certificates for all the servers it is connecting to. For example, if the 
phone is connecting to server A which has a certificate signed by CA1, and server B that 
has a certificate signed by CA2, the phone must have CA1 root certificate and CA2 root cer-
tificate in its Trusted Certificate file.

This parameter is required when configuring TLS or Persistent TLS.

You can use this parameter in three ways:

To download no certificates

To download a certificate from the original configuration server

To download a certificate from another specified server

To download a specific file, the string value MUST HAVE A FILENAME at the end of the 
string. For example:

sips trusted certificates: ftp://admin:admin!@1.2.3.4:50/path/phonesTrustedCert.pem

where “path” is the directory and “phonesTrustedCert.pem” is the filename. If you do not 
specify a filename, the download fails.

See examples for each below.

Note:
The certificate files must use the format “.pem”. To create custom certificate files to use on 
your IP phone, contact Aastra Technical Support.

<file name>.pem

Not Applicable

Not Applicable

The following example downloads no trusted certificate file:

sips trusted certificates:

The following example downloads the trusted certificate file from the original configura-
tion server.

sips trusted certificates: phonesTrustedCert.pem

The following example uses FTP to download the firmware file “phonesTrustedCert.pem” 
(trusted certificate file) from the “path” directory on server 1.2.3.4 using port 50:

sips trusted certificates: ftp://admin:admin!@1.2.3.4:50/path/phonesTrustedCert.pem