BGS2T AT Command Set
3.3 AT^SIND
BGS2T_ATC_V01.301
Page 72 of 554
1/31/12
c
"ciphcall" indication and for the action triggering this URC. In general, the rec-
ommended solution is to use a dedicated channel for all status signalling via
URCs.
•
If an unciphered mobile originated SMS is performed,
"ciphcall"
URCs on the same serial channel will be issued after the related "OK" and
indicate the ciphering state at
this
time. Because the SMS is already sent at
this time, two URCs will be issued on this channel, but both are indicating
that ciphering is enabled.
•
If an unciphered mobile originated data call is performed,
call" 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 ME 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 EONS tables are stored on the SIM and will be read at power-up.
Following are the SIM Elementary Files that are affected by the introduction of
EONS feature in the SIM:
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
If the Operator Name Source is CPHS Operator Name String long and short
form, refer to
, the following two SIM Elementary Files will be
used:
EF
ONString
(Operator Name String) - contains the name of the PLMN operator
who issued the SIM.
EF
OPShort
(Operator Name Short form) - contains a short form of the name of
the PLMN operator who issued the SIM.
“steerroam“
Steering-of-roaming Indication
The "steerroam" Indication supports so called "steering-of-roaming" ("SOR")
techniques of some providers.
If a ME roaming within a certain country tries to register to a VPLMN (visited
PLMN), the VPLMN will ask the HLR of the subscribers home operator for
authorization credentials of the subscriber. Steering-of-roaming means that
instead of sending those credentials, the HLR sends back an error message
which will make the VPLMN send back a location update reject to the ME. This
location updating procedure is described in 3GPP TS 24.008 chapter 4.4.4.9.
When ME is attempting to register into a PLMN and get updating rejected with
reject cause 17 then ME stays in limited service on the configured network, ME
may reattempt network registration four times, and after that ME will inform the
TE via Steering-of-roaming Indication URC "steerroam" that the registration
attempt has failed.
When the ME is in manual PLMN selection mode (see
) the TE has
to start a new manual PLMN search to select a different network or switch to
automatic PLMN selection mode.
When ME is in automatic PLMN selection mode (see
) ME itself
attempts a PLMN search to select a different network.
“nitz“
Network Identity and Time Zone indication
This indicator shows the time relevant information elements of an MM Informa-
tion (MMI) or GMM Information (GMMI) message received from the network
(see 3GPP TS 24.008
, ch. 9.2.15a and 9.4.19). The network usually sends
a NITZ indicator when the mobile attaches to the network, when it enters a
location area with different time zone or when a daylight change occurs.
A NITZ indicator may consist of the following parameters: Universal Time (UT),
Confidential / Released