Specifications

Chapter 3 – Status Control Commands
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371B) 40
“vmwait1“ Voice Message Waiting Indication for line 1
0 Notifies that no new voice message is available, and is provided by the service
center to clear the voice message indication after the subscriber has retrieved all
voice messages.
1 Notifies the subscriber that the mailbox contains one or several messages.
“vmwait1” and “vmwait2” indicate the receipt of a special short message with a Voice
Message Waiting Indicator. The service must be provisioned by the operator.
The numbers 1 or 2 in “vmwait1” and “vmwait2” are related to the two lines of the Alternate
Line Service (ALS), also defined in CPHS Phase 2 standard. For further details refer to the
AT^SALS command.
The presentation mode of the indicator varies with the operator: If more than one message
are waiting, some operators only indicate the first one, others deliver the indicator each time
a new voice message is put into the mailbox.
After the subscriber has retrieved all voice messages the service center automatically sends
another message indication which provides the value 0.
Some operators may also send the number of waiting voice messages along with the
indication. In this case, this number will be displayed by the Multi-Tech wireless modem as
part of the URC. For example, “+CIEV: vmwait1,1,5” notifies that five new voice messages
are waiting. However, it should be noted that neither the read command AT^SIND? nor the
write command AT^SIND=<mode>,2 display the number of waiting messages.
The “vmwait” indicators do not apply if a network provider signals new voice mail(s) via
standard SMS. In this case the indicator “message” will be displayed (see AT+CIND).
“vmwait2“ Voice Message Waiting Indication for line 2
0 See description of “vmwait1”.
1 See description of “vmwait1”.
“ciphcall“ Ciphering Status Change Indication
0 Current call or SMS is not ciphered.
1 Current call or SMS is ciphered.
As stated in GSM specifications 02.07 and 02.09 the ciphering indicator feature allows the
Multi-Tech wireless modem to detect that ciphering is not switched on and to indicate this to
the user.
The ciphering indicator feature may be disabled by the home network operator setting data
in the “administrative data” field (EFAD) in the SIM, as defined in GSM 11.11.
If this feature is not disabled by the SIM, then whenever a connection is in place, which is, or
becomes unenciphered, an indication shall be given to the user. This enables the user’s
decision how to proceed.
Read command returns valid ciphering status only if a call is in progress or active.
If EF
AD
setting disables the ciphering indicator feature read command always indicates a
ciphered link and no URC presentaion will take place.
The following restrictions apply if the same serial channel is used for AT^SIND
“ciphcall” indication and for the action triggering this URC. In general, the recommended
solution is to use a dedicated channel for all status signalling via URCs.
• If an unciphered mobile originated SMS is performed, AT^SIND “ciphcall”
URCs on the same serial channel will be issued after the related “OK” and indicate
the ciphering state at this time.
• If an unciphered mobile originated data call is performed, AT^SIND “ciphcall”
URCs on the same serial channel will be issued after the interface is not longer
blocked by the call (call is released or temporarily stopped) and indicate the ciphering
state at this time.
“eons“ Enhanced Operator Name String (EONS) Indication.
The Enhanced Operator Name String indicator feature allows the Multi-Tech wireless
modem to output various operator names for different PLMN identities via URC. It also
allows the output of a different operator name based on a subset of the registered network
by using a range of Location Area Codes (LACs) or a single LAC.
The presentation of the “eons” indicator is determined by network activity. For example, the
indicator appears every time a location update occurs or a NITZ information is sent, no
matter whether or not the status of the EONS information has changed. This means that the
same EONS information may be reported several times.
The EONS tables are stored in the SIM card and will be read at power-up.
This is a list of the SIM Elementary Files that are affected by the introduction of EONS
feature in the SIM card:
EF
SST
(SIM Service Table) - describes which features are active.
EF
OPL
(Operator PLMN List) - contains the PLMN identification and location ID
together with the index of the corresponding PNN record.
EF
PNN
(PLMN Network Name) - contains the full and short form version of the
network name for the registered PLMN.