Lucent Technologies 555-230-220 manual Optional If this parameter is present, it indicates that

ASAI and Call Control

service_circuit	Must not be present
return_ack	[optional] If this parameter is present, it indicates that
	the ECS should return an acknowledgment to the
	request. If this parameter is not present, the ECS
	does not return an acknowledgment.
uui_info	[optional] The ECS supports receiving UUI in the
	Third Party Make Call request from the adjunct. If an
	ASAI adjunct provides UUI in a Third Party Make Call,
	then the ECS stores that UUI with the call.
	UUI from a Third Party Make Call will be sent in any
	ISDN SETUP message for the call, in the Alerting and
	Call Offered Event Reports, and in a Route Request,
	if one is made.
	The UUI IE sent over an ISDN trunk can contain more
	data than the UUI IE sent to ASAI. This happens
	when the ISDN trunk group is administered with
	supplementary service protocol other than B, and the
	UUI IE Treatment is set to “shared”. The UUI for ASAI
	is packed within the shared UUI before it is sent over
	an ISDN trunk, and is unpacked at the other end.
	This is transparent to the ASAI adjuncts, with two
	exceptions:
	1. If the maximum size UUI allowed on the ISDN
	trunk is exceeded, then the lower priority data
	items will be dropped. Whether or not this means
	that ASAI UUI is dropped depends on the
	priorities of the data items. These priorities are
	administered on each trunk group form. Each item
	stored in shared UUI uses two extra bytes.
	Therefore, if the ISDN trunk group is administered
	to allow a shared UUI length of 32 bytes then the
	ASAI UUI will be limited to 30 bytes instead of 32.
	2. If a service provider, or customer equipment other
	than a DEFINITY ECS (R6.3 or later) will be
	interpreting the contents of the UUI IE, then the
	trunk group used to place those calls should have
	its UUI IE Treatment set to “service-provider”.
	This sends the UUI as specified by the ASAI
	application, without change.
	For more information, see the Section, ‘‘Integrated
	Services Digital Network (ISDN),’’ in Chapter 12,
	‘‘ASAIand Feature Interactions.’’

Issue 7 May 1998 4-35