Aastra Telecom 41-001343-02 manual Certificate, the Private Key, and the Trusted Certificates

			Operational, Basic, and Advanced Parameters
Parameter –		Configuration Files
sip transport protocol		aastra.cfg, <model>.cfg, <mac>.cfg
Description		The protocol that the IP phone uses to send out SIP messages.
		Notes:
		• If you set the value of this parameter to 4 (TLS), the phone checks to see if the “sips
			persistent tls” is enabled. If it is enabled, the phone uses Persistent TLS on the con-
			nection. If “sips persistent tls” is disabled, then the phone uses TLS on the connec-
			tion. If TLS is used, you must specify the Root and Intermediate Certificates, the Local
			Certificate, the Private Key, and the Trusted Certificates.
		•	If the phone uses Persistent TLS, you MUST specify the Trusted Certificates; the Root
			and Intermediate Certificates, the Local Certificate, and the Private Key are optional.
		•	This parameter implies keep-alive mechanism.
		For more information about Persistent TLS, see “Transport Layer Security (TLS) Set-
		tings” on page A-89.
Format		Integer
Default Value		1 (UDP)
Range		Valid values are:
		0 - User Datagram Protocol (UDP) and
		Transmission Control Protocol (TCP)
		1 - UDP
		2 - TCP
		4 - Transport Layer Security (TLS)
Example		sip transport protocol: 4
Parameter –		Configuration Files
sip registration retry timer		aastra.cfg, <model>.cfg, <mac>.cfg
Description		Specifies the time, in seconds, that the phone waits between registration attempts
		when a registration is rejected by the registrar.
Format		Integer
Default Value		1800 (30 minutes)
Range		30-1800
Example		sip registration retry timer: 30
Parameter –	Configuration Files
sip registration timeout retry timer	aastra.cfg, <model>.cfg, <mac>.cfg
Description	Specifies the length of time, in seconds, that the phone waits until it re-attempts to reg-
	ister after a REGISTER message times out.
	If this parameter is set lower than 30 seconds, the phone uses a minimum timer of 30
	seconds.
Format	Integer
Default Value	120
Range	30 - 2147483647
Example	sip registration timeout retry timer: 150

41-001343-02 REV04 – 05.2014 A-84