L3 D Channel Control (0x000A)

Purpose

This section describes the PPL configuration bytes and events for L3 D Channel Control.

L3 D Channel Control Configuration Bytes

Byte	Description	Values
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

L3 D Channel Control L3/L5 Events

PPL Event Request (L5 to L3)	PPL Event Indication (L3 to L5)
0x0001 Manual D Channel Switchover *	0x0001 D Channel Active * 0x0002 D Channel Standby * 0x0003 D Channel Not Aligned *
	0x0004 -Network Side D Channel Down, T309 started
	0x0005 - T309 expired. Network Side D Channel Down
	0x0006 - Network Side D Channel Re-Established.
* Applies to D channel Backup only.

PPL Timers

DSM 11 is D channel control. DSM 12 is D channel control with a backup D channel.

The following PPL timer is available for use with DSM 11:

Timer	Timer Index	Value (10 ms)
T309	9	9000

The following PPL Timer is available for use with DSM 12:

Timer	Timer Index	Value (10 ms)
T309	9	9000

QSIG/PSS1 PPL Timer

Timer ID	Description	Value (default)
0x0E	T314 (Reassembly Timer)	4 seconds (400 10ms units)

The following PPL timer is available for use with QSIG/PSS1.