Configuring the ISDN connections

Hardware configuration.

The ISDN connections on the hybird 120 can be operated as S0 NT, S0 TE . There are two slots with a mini PCB beneath the removable faceplate and beneath the flap underneath it, for switching between the separate operating modes:

You can set the operating mode by plugging in the mini module belonging to each connection (ISDN 1 above, ISDN 2 below) in such a way that, when viewed from above, you can see the label you want (for guidance: the connections on the device are located on the bottom). Also, adjacent to the slots for switching over the operating mode you will find two switch blocks for switching the terminators on and off. In its ex works state, the terminators for both ISDN connections are active.

 

NT= ISDN Internal (S0)

TE = ISDN External

Type of Line and Layer 2 settings.

If the mini PCB is inserted the wrong way, you will not see the ISDN port in the web-interface.

Description: Enter a user-defined description of the ISDN interface.

Name: Shows the name of the ISDN interface.

Access Configuration: Select whether the ISDN interface will be operated as a point-to-multipoint connection or as a point-to-point connection.

Permanent Layer 2 Activation: This function (also known as permanent monitoring) constantly monitors the functionality and transmission quality of an external ISDN connection. For this purpose, the system is in permanent contact with your network operator's exchange. If the exchange does not keep the ISDN layer 2 permanently enabled, the system can initiate the repeated establishment of layer 2.

ISDN Synchronisation: When an external device (e. g. GSM gateway) is connected to an external point-to-point ISDN access in the system, the external device's signal can disturb the synchronisation in the ISDN signal. Only if such a disturbance occurs should you switch off the layer 1 synchronisation.

 

ISDN Basic settings

Description: You can enter a name for the connection you selected.

Access Type: Shows the configured connection type. ISDN P-P / ISDN P-MP

Port: Select the description for the port via which this external connection is connected.

Outgoing Signalisation:

  • Standard (default value)
  • Global CLIP no Screening Number
  • Individual CLIP no Screening Number

Type of Number:

  • System Setting : The standard system setting (country setting) is used.
  • Unknown : Select this setting if the ISDN number type "unknown" is to be signalled.
  • Subscriber : Select this setting if the ISDN number type "Subscriber" (extension number).
  • National : Select this setting if the ISDN number type "National" (area code + extension number).

Call Hold inside the PBX system: Select whether a telephone call is to be put on hold in the system without losing the connection.Only available for some countries, is an ISDN feature.

ISDN phone numbers

Go to: Assistants - PBX - Trunks

Point to Multipoint example:

Add your ISDN (MSN) numbers

Name: Enter a description for the connection to improve recognition.

Ports: A new external port entry can be generated using Add. After this, you will need to select the module slot to be used

Trunk Numbers: You can also enter MSNs for point-to-multipoint connections here with the aid of Add. This name is shown for this number on the display of the called system telephone.

 

 

 

 

 

 

 

 

 

Point to Point example:

Add your ISDN ) numbers

Name: Enter a description for the connection to improve recognition.

Ports: A new external port entry can be generated using Add. After this, you will need to select the module slot to be used

P-P Base Number: You can also enter the PBX number for the point-to-point connection.

P-P DDI Exception: With Add, you can create new extension numbers. Enter the extension exception for a point-to-point connection according to your call number plan here.

 

 

 

 

 

 

 

 

 

 

ISDN debugging

In case of errors, there are in the SNMP view tables that can provide additional info about the ISDN lines.

sysPCMTable

  • Go to: administration - sysPCMTable

isdnIfTable

  • Go to isdn - isdnIfTable

The column slips should be less then 100 per week.

More tracing can be done using Dime manager or via SSH debugging.

 

 

 

  • No labels