Dialogic 6.2 manual R2 Digital Line Signaling Parameters, November 343

Enabling the R2 Protocol

BSMI does not support varying any parameter settings from channel to channel on a single trunk. Trunk level configuration is performed upon receipt of the first L4L3mENABLE_CAS message on that trunk. However, L4L3mENABLE_CAS must be sent for every channel in order for the channel to initialize and go on-hook. Therefore, the IISDN_E1_CAS_R2_DATA structure should be filled out identically for each channel's L4L3mENABLE_CAS.

The IISDN_E1_CAS_R2_DATA structure itself contains two structures. Table 18 identifies the IISDN_R2_DIGITAL_LINE_SIG_ PARAMS sub-structure that contains the parameters required for configuring the E1 CAS line protocol. None of these parameters is modifiable once correctly specified for a particular network.

Table 18. R2 Digital Line Signaling Parameters

Name	Description	Units	Range
r2OutSeizeTimer	Time outbound side waits	ms	Refer to network
	for seize		specification, however, this
	acknowledgement signal.		is typically set to 100-200
			ms for a terrestrial circuit,
			or 1-2 seconds for a satellite
			circuit, plus approximately
			32 ms to account for internal
			detection latency.
r2OutAnswerTimeOut	Maximum time between	ms	Refer to network
	reception of MF call		specification.
	acceptance signal and
	inbound answer.
inboundReleaseGuardTime	Certain networks require	ms	0: disable release guard
	the inbound side to hold a		>0: refer to network
	“release guard” state
			specification
	(clear-back) for a certain
	amount of time following
	detection of the outbound
	clear-forward signal.
inboundLineQualTimerIdle	Inbound line signaling	ms	0: qualify bits immediately
	event qualification time		>0: refer to network
	during the idle state.
			specification

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