Lucent Technologies 7820-0802-003 manual System IP address considerations

Signaling System 7 (SS7)

Configuring an SS7 signaling gateway

Parameter	Specifies
Device-ID	Logical SS7 command control device where these values apply.
	Currently, the settings in this profile apply only to the TAOS unit’s
	operations. This parameter is currently not used.
T1-Duration	Value of the acknowledgement (ACK) delay timer in
	milliseconds. This timer specifies the maximum delay for an
	acknowledgement when an information frame (I-frame) is
	received. The default value is 1000 (1 second). The value must
	be less than the T2 duration timer specified on the signaling
	gateway. Valid values range from 0 to 2147483647.
T2-Duration	Value of the transmission time-out timer in milliseconds. This
	timer specifies how long this endpoint must wait for an
	acknowledgement to a heartbeat frame. The default value is 3000
	(3 seconds). The value must be greater than the T1 duration timer
	on the signaling gateway. Valid values range from 0 to
	2147483647.
T3-Duration	Value of the persistent error timer in milliseconds. This timer
	specifies the maximum duration of attempts to reestablish a link
	before the transport layer flushes the data queues and sends an
	error indication up. Default value is 30000 (30 seconds). Valid
	values range from 0 to 2147483647.
Window-Size	Maximum number of sequentially numbered data packets that can
	be sent while pending acknowledgement at any given time.
	Default value is 7. Valid values range from 1 to 63.
Ack-Threshold	Threshold for triggering an acknowledgement (ACK) while
	receiving data packets. As soon as the specified number of
	packets is received, the TAOS unit sends an ACK back regardless
	of the value of its T1 timer. The value of this parameter must not
	be greater than the window size. Default value is 6. Valid values
	range from 1 to 63.
Heartbeat	Enable/disable detection of a physical link failure, such as
	disconnection of a cable or failure of the signaling gateway. When
	the parameter is set to yes, the TAOS unit periodically sends out
	heartbeat frames to the signaling gateway and waits for an
	acknowledgement. If it does not receive an acknowledgement
	within the number of milliseconds specified in its T2-Duration
	timer, the TAOS unit resets the signaling link.

System IP address considerations

The System-IP-Addr parameter of the IP-Global profile specifies the source address of all packets generated by the system, such as the connection request packets sent to a signaling gateway to establish communication. When the Use-System-IP-Address-As-Source parameter is set to yes (the default), the TAOS unit uses the system address as its source address in the packets it sends to the signaling gateway.

APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide 18-7