Dialogic 6.2 Manuale Utente

Q.921/Q.931 Timers

November 2009

334

If layer 2 has been enabled, you will receive the data (termed 

payload) you expect with the layer 2 headers stripped off and all the 

data reliability checks already performed. If layer 2 has not been 

enabled, you will receive intact layer 2 packets, which will contain 

the payload. These packets will need to be processed, and a layer 2 

stack will have to be implemented all the while extracting the 

payload.

HDLC packetization does not need to be enabled, instead you can 

choose the raw mode option. To do this, both HDLC headers will 

need to be either stripped off or recognized, and the layer 2 packet 

headers inside the HDLC headers to get to the payload.

unsigned 

short

t318

Q.931 Resume Request state timer. Default value 

is 1200 (120 seconds).

unsigned 

short

t319

Q.931 Suspend Request state timer.  Default value 

is 1200 (120 seconds).

unsigned 

short

t3m1

Q.931 Maintenance SERVICE ACK timer. Default 

value is 1200 (120 seconds). Default value must be 

used for NFAS configurations.

unsigned 

short

t321

Q.931 NFAS D-channel backup timer. Default 

value is 400 (40 seconds).