Kuhnt AS55 Series, Service Manual

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SERVICE MANUAL AS55X
162 www.kuhnt.com 55Xseries_manual_V3.22 (18-08-15)

Star hash codes enabled for WLL
It is possible now to enter start hash codes e.g. to switch call
forwarding in gsm networks. All codes beginning with a star can be
entered normally. But all codes beginning with a hash must be
entered in a special manner as the beginning with a hash will result in
a conflict with DTMF commands of the WLL. For codes beginning with
one hash please enter '1#', for codes starting with a double hash
please enter '2#'. E.g. to switch call forwardings off, '2#002#' has to be
entered. To enable this feature, unnamed byte 9 must be set to 0 and
unnamed bit 75 must be set.

CLIR with FAX calls
Outgoing FAX calls present the voice number instead of the FAX
number of the SIM. This can result into confusion by the recipient,
which number should be used for a reply. If unnamed bit 74 is set, the
presentation of the number will be restricted, even if it is requested
for voice calls.

Support of firmware version 03.001 of PH8 module

Simplified internet access of the WLL550
As long as internet access is not set by service software, the access
can be enabled by the DTMF code #721# and disabled by the code
#720#. This setting will be removed with a cold start.

Support of WLL550 PCB revision 2
8.12.2 Problem solution

Suppression of FAX error correction
If the receiving FAX device provides polling, the suppression of error
correction by the WLL550 did not work properly. This is corrected.

Improvement of the DHCP server
For WLL550 the DHCP server is improved for better handling of a
changed IP address by the wireless network.

Very long boot time of GSM module
In some cases the GSM module needs very long time to start with
reaction of commands and later to return the IMSI of the SIM. This is
due to handling much data from the SIM. This will be tolerated now.

SMS callback request and VPN prefix