TANDBERG 6000MXP user manual Channel Status, Cause codes, PRI Red Alarm

General Use

3.13.1.2 Channel Status

Comprehensive information about the call progress is available through the Channel Status window. This window indicates the various stages each B-channel goes through whilst establishing a connection.

Status -

BRI

Comments

Idle

Calling

Connected

Sync

Active

Releasing

Released

the channel is—idle

when calling the network has acknowledged the call when connection is established

when the channels are synchronized when all available channels are connected

waiting for the network to confirm a release of the call

when disconnected - the network has acknowledged the disconnection

Cause codes

The most common cause codes (for ISDN) are:

1

2

16

17

18

21

28

29

31

34

41

58

65

69

81

88

100

102

127

255

Unallocated (unassigned) number

No route to specified transit network (WAN) Normal clearing

User busy

No user responding

Call rejected

Invalid number format (incomplete number) Facility rejected

Normal, unspecified

No circuit/channel available

Temporary failure

Bearer capability not presently available Bearer service not implemented Requested facility not implemented Invalid call reference value Incompatible destination

Invalid information element contents Recovery on timer expiry Internetworking, unspecified TANDBERG specific. undefined cause code

PRI Red Alarm

Red alarm or Loss of signal (LOS) means that there is no signal and thus no framing info received (this has same effect as pulling out the PRI cable).

103