RTS SIP-ISDN, Hardware & Software Manual, Page: 60 / 102

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– Overheated : The systems sets this alarms if the system temperature is higher
than 57°C. Please disconnect the system from electricity or cool down the ambi-
ent air temperature.
• Under Application alarms all possible application alarms are displayed. A red
LED signals a currently existing alarm. It is also displayed how often the alarm oc-
curred since the unit has been switched on.
– H.221 Framing : If the ITU-T J.52 inband signalling is used, faulty H.221
frames are displayed and filed.
– If the optional, digital Audio output is selected, but no digital Audio signal is con-
nected to AUDIO1/AES/LEFT IN , the AES3 Framing alarm occurs.
– The actual system temperature can be found under System Temperature . The
temperature is measured in °C. A normal system temperature lies around
30...40°C.
– Under DSP Load the load of the system is displayed. A normal DSP load is
30...60%.
• Under System Logfile a detailed ISDN logfile can be generated.
– ISDN Layer 1 : (Physical Layer): All messages which concern the physical acti-
vation/deactivation of the ISDN interface are saved in Layer 1.
– ISDN Layer 2 : (Data Link Layer): The Data Link Layer is responsible for pack-
ing the data from the physical layer into frames. It can detect and/or correct errors
and manages the data flow between nodes. This layer is only to be activated for
logging if problems are supposed to occur. Please notice that if it is activated
every 8 seconds an entry is generated and therefore the memory is filled very fast.
– ISDN Layer 3 (Network Layer): The Network Layer handles the routing of the
data (sending it in the right direction to the right destination on outgoing transmis-
sions and receiving incoming transmissions at the packet level). For the logfile,
this layer is the most important one since all connection data is recorded here.
– The logfile can be deleted by pressing the Delete File button. For safety reasons
a confirmation is required.
The system stores all messages of the activated ISDN Layer . The internal memory ca-
pacity is 128-kByte
1
. The data is stored in a cyclic way.
TIP
You can also configure a system alarm as relay output (see page 45).
NOTE
The data can be analysed using the optional RTS SIP-ISDN Remote Control &
ISDN Monitoring Software (see CHAPTER 6). Our support is also able to read the
data remotely. If you experience problems with your ISDN connection, please acti-
vate the desired ISDN Layer of the system logfile enabling us to analyse them.
1. An entry of the ISDN protocol is about 15 Byte on average.