Install and configure ITG ISL Trunk node Page 203 of 378
ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
6To turn off a codec, click on the codec and uncheck the checkbox.
7To change the preferred order of codec selection, for out going cal l s, if
required, select the codec and click the Move Up and Move Down
buttons. ITG Trunk node requests the codec at the top of the list first
on outgoing calls.
8To enable Voice Activity Detection for silence suppression, check the
appropriate box. To disable Voice Activity Detectio n for silence
suppression, uncheck the box.
Chan
g
e default DiffServ/TOS value for Control and Voice
1Enter the DiffServ/TOS value for Control and Voice, if required, to
obtain better QoS over the IP data network (LAN/WAN). Do not
change from default value of 0 unless instructed by IP network
administrator.
The Type of Service (TOS) byte or Differentiated Service (DiffServ)
code point determine the priority of the contr ol and voi ce packets in the
network router queues. The values entered in these two boxes must
be coordinated across the entire IP data network. Do not change them
arbitrarily.
DiffServ/TOS values must first be converted to a decimal value of the
DiffServ/TOS byte in the IP packet header . For exampl e, the 8- bit TOS
field value of 0010 0100 which indicates “Precedence=Priority”;
“Reliability=High” is converted to a decimal valu e of 36 bef ore being
entered in the Control or Voice fields.
2Click Apply.