coM.sat ISDN Basic Manual page 32

coM.sat ISDN Basic
connected. Each dialled digit is immediately forwarded to the PBX which terminates
the dial procedure as soon as it has enough information to call an extension.
This is different if "En-bloc" dialling is selected. Then the coM.sat ISDN Basic
connects the call without contacting the PBX. This is done after the called number
has been completely received. Since the device does not know the numbering plan
of the PBX, it can not determine from the called digits if a number is complete. This is
detected either by having received as much digits as specified by "Max. Length" or if
no more dial information is received for as long as configured in "Incoming call dial
timeout" in the channel settings. If less than "Min. Length" digits is received, the call
is rejected.
The option "En-bloc" has to be used if the PBX does not support overlapped dialling.
If no PBX is connected, but only some phones on a bus, this is almost always
necessary. If using overlapped mode and incoming calls which should be able to dial
do not get a dial tone, but one or more phones start ringing immediately, this
indicates that the "En-bloc" option is needed.
A further option ("Enable CLIP in TE Mode") can also be selected in this card, but it
can only be accessed if the TE mode has been set. You can then choose whether
the caller's number is to be transmitted or not. If this box is checked, the coM.sat
ISDN Basic tries to transmit the number calling from within the GSM network -
provided the telephone system it is connected to supports this feature.
The option "Enable Maintenance Calls" determines the handling of GSM data calls.
If the option is switched off, all data calls are ignored. If it is enabled, these calls can
be connected in order to perform remote maintenance. If the list "Maintenance Calls
from" is empty, all data calls are connected. If there are numbers in this list, only data
calls from these numbers are connected for remote maintenance.
Callers can also be rejected by the coM.sat ISDN Basic. The relevant phone
numbers are entered in the "Reject Callers" list box. Only one phone number is
entered in each row. The number of the caller may be longer than the number in the
list, so multiple callers with the same prefix can be rejected with a single entry.
The telephone numbers of callers that are to be transferred directly to specific
extensions can be entered in another list (Direct Calls from / to). The callers must
have activated Calling Line Identification Presentation (CLIP) in their phone in order
to utilise this feature. The entries must be entered in the form: <international phone
number><national dialling code><phone number>/<MSN>.
Example: +4962171481430/22
Note: Both lists use the country and area code settings so that only one notation of a
number need to be entered in the lists.
The length of the lists only depends on the amount of internal memory. A storage
area of 32 kByte is available for the lists and configuration parameters. A 10 - digit
number occupies 10+1 bytes of memory, moreover a few additional bytes are
needed for the termination of the lists. It is up to the user to decide which lists are
important and need to be enforced. It is entirely possible to use one and only one of
created: page: file:
16/01/09 32 coMsat ISDN Basic Manual V2.7.doc
Note Protection Mark according to DIN 34!