14 Operation on an ISDN Access
ARGUS 145
PLUS
243
If both modes (P-P / P-MP) are found when Layer 2 on the D-channel is checked,
the mode must be selected manually (see page 242).
If everything has been detected without errors, the ARGUS will display the type and mode
of access found. Additionally, a qualitative assessment of the level will be displayed.
The ARGUS will automatically determine the protocol (in both TE and NT mode) or use the
protocol set manually page 245. On a bilingual access, the ARGUS will use the DSS1
protocol.
The "IP / L3" LED will light after the ARGUS has setup Layer 3. At the same time the
ARGUS will start a B-channel test and then display the results. If an error occurs in the B-
channel test (e.g. access is not plugged-in), the ARGUS will display an error message (see
appendix). The ARGUS will then idle in the State display.
Display:
If only one B-channel is available, this can have an impact on the service check
and the testing of the supplementary services.
- Type of access (in the example, BRI)
- Access mode
NTs
NTm
TEs
TEm
NT Simulation Slave mode
(see page 246)
NT Simulation Master mode
TE Simulation Slave mode
TE Simulation Master mode
- Bus configuration
D-channel Layer 2 mode
P-P
P-MP
Point-to-point
Point-to-multipoint
- D-channel protocol
in the example, DSS1
- The availability of the B-channels
B12
B1-
B-2
B--
Both channels are available
Only B-channel 1 is available
Only B-channel 2 is available
No B-channel available
Example:
State display on a BRI access