Umts (Wcdma) / Gsm Specifications - Sierra Wireless AirPrime SL808 Series Product Technical Specification & Customer Design Manuallines

Table 7-2: Supported GSM / GPRS specifications (Continued)
Item
Unstructured supplementary
services data (USSD)
(SL8080/82/84)
Supplementary services
Cell reselection/handover
Security - IMEI Security
SIM lock
SIM security
Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change

7.3 UMTS (WCDMA) / GSM specifications

Table 7-3 details the SL808X modem's support for common UMTS (WCDMA) and
GSM specifications.
Table 7-3: UMTS (WCDMA) / GSM specifications
Item
Mobility management
Automatic PLMN selection / reselection
Location updating procedure
IMSI attach procedure
IMSI detach procedure
Periodic location update
Authentication procedure
CM connection establishment from MS or network
CM connection release
Encryption key management
TMSI reallocation
Paging response
Abort procedure
Identification
CN system information
Call re-establishment
Comments
USSD provides support for transmitting information over the
GSM network signalling channels. It provides fast session-
based communication between the user and an application,
enabling use of text messaging, prepaid roaming, chat, etc.
Support for supplementary voice services such as Call Hold,
Call Forward, Call Waiting, Multi-party Calls, Caller ID, Fixed
Number Dialing, Service Dialing Numbers, etc.
Supports InterRat and InterFrequency cell-reselection and
handover between supported frequency bands.
The device can be 'MEP locked' to a particular PLMN.
Both CHV1 and CHV2 are supported (unlock and unblock).
a
GSM UMTS
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