Dialogic 6.2 Benutzerhandbuch

Q.921/Q.931 Timers

November 2009

333

unsigned 

short

n200

Maximum number of retransmissions.    Default 

value is 3.

unsigned 

short

n201

Maximum number of octets in an I frame. 

Currently the maximum is 240.

unsigned 

short

n202

Maximum number of transmissions of a TEI 

request message. Default value is 3.

unsigned 

short

K

Maximum transmit window. Default value is 7; 

maximum value is 127. BRI default is 1.

IISDN_Q931_

TIMERS

q931

Structure that includes changes to the Q.931 timer 

values, if any. A value of 0xFFFF disables the 

timer. Setting a field to 0 causes the default to be 

used.   Some timers have two possible default 

values depending on the connection type/variant 

used. For example, if the variant field value is 

IISDNvarCCITT in an L4L3mENABLE_

PROTOCOL message, or the conn_type field 

contains an IISDNctCCITT value in an 

L4L3mENABLE_D_CHANNEL message, the 

CCITT default value below is used. For all other 

connection type or variant values, the standard 

default value is used.

unsigned 

short

t302

Q.931 Overlap Receiving timer. Default value is 

150 (15 seconds).

unsigned 

short

t305

Q.931 Disconnect Request state timer. Default 

value is 50 (5 seconds) and the ITU-T default value 

is 300 (30 seconds).

unsigned 

short

t308

Q.931 Release Request state timer. Standard 

default value is 50 (5 seconds) and the ITU-T 

default value is 40 (40 seconds).

unsigned 

short

t313

Q.931 Connect Request state timer. Default value 

is 50 (5 seconds) and the ITU-T default value is 40 

(4 seconds).

unsigned 

short

t314

Q.931 Segment message time. Default value is 40 

(4 seconds).

unsigned 

short

t316

Q.931 Restart Request state timer. Default value is 

1200 (120 seconds).