SERVICE MANUAL AS55X
158
www.kuhnt.com
55Xseries_manual_V3.22 (18-08-15)
The firmware now supports the Gemalto/Cinterion PH8 module. With
the WLL550, download speed of up to 7.2Mbps is possible.
8.9.2
Problem solution
Fixed link ISDN B-channel to GSM channel
This issue only concerns the AS551 BRI 4V. If the fixed link between
ISDN B-channel and the GSM channel is activated, this did not work
properly for the GSM channel 3 and 4 in the direction from GSM to
ISDN. This problem is solved.
Character '@' with SMS API
The character '@' (code 0 in the GSM alphabet) could not be sent or
received via the SMS API. This problem is solved.
SIM blocked
Some SIM types have very long startup delays and during this delay,
the SIM seems to be blocked. The firmware can handle this issue now.
Suppress SIP protocol elements
Some PBXes cannot handle the SIP PROGRESS request or session
description (SDP) in the SIP RINGING request. PROGRESS can be
suppressed by setting unnamed bit 68 and SDP in RINGING can be
suppressed by setting unnamed bit 69.
Authentication to SIP BYE
Some PBXes need an additional authentication for the termination of
a call. The AS55X can handle it now.
DNS and DHCP with WLL
In some cases DNS requests would not be forwarded to internet
properly if no explicit DNS server IP address has been configured in
WLL550 (e.g. if the computer gets its IP address from the WLL550 with
DHCP). This problem is solved.
Summary of Contents for AS55 Series
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