Dialogic 6.2 Manuale Utente

Enabling the R2 Protocol

November 2009

343

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. 

 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.

Time outbound side waits 

for seize 

acknowledgement signal.

ms

Refer to network 

specification, however, this 

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.

Maximum time between 

reception of MF call 

acceptance signal and 

inbound answer.

ms

Refer to network 

specification.

Certain networks require 

the inbound side to hold a 

“release guard” state 

(clear-back) for a certain 

amount of time following 

detection of the outbound 

clear-forward signal.

ms

0: disable release guard
>0: refer to network 

specification

Inbound line signaling 

event qualification time 

during the idle state.

ms

0: qualify bits immediately
>0: refer to network 

specification