0x01

Channel ID encoding of extension bit

* 0x00 = Ext. bit set
0x01 = Ext. bit cleared

0x02

Network Side (T309 Logic) Enable/Disable

0x00 = Disable
0x01 = Enable
Default is enabled if Connection Type is a Network Side variant.

0x09

Send D channel Up event to GCR

0x00 = Disable
*0x01 = Enable