Aastra Telecom 9143i Series ユーザーズマニュアル

6-4

41-001160-03, Rev 00, Releaes 2.4 

IP Phone Administrator Guide

Allows you to enable or disable the use of Persistent 
Transport Layer Security (TLS). 

Persistent TLS sets up the connection to the server once 
and re-uses that connection for all calls from the phone. The 
setup connection for Persistent TLS is established during the 
registration of the phone. If the phones are set to use 
Persistent TLS, and a call is made from the phone, this call 
and all subsequent calls use the same authenticated 
connection. This significantly reduces the delay time when 
placing a call.

Allows you to enable or disable the 802.1x Protocol support 
on the IP Phones. 

Allows you to enable or disable the phone to use port 5060 
to send SIP UDP messages. 

Allows you to enable or disable the addition of the 
User-Agent and Server SIP headers in the SIP stack.

IP Phones support Sylantro Server features, like mandatory 
and optional billing codes that require the application server 
to notify the phone to collect more digits before completing 
the call. The IP phone is able to collect digits in two stages to 
support the billing code feature.

Allows you to specify the Domain Name Service (DNS) 
query method to use when the phone performs a DNS 
lookup.

Allows you to configure the phone to ignore CSeq number 
errors on all SIP dialogs on the phone.

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