Download ETSI EMTEL (Special Committee on Emergency Communications) CHAIRMAN Ray Forbes

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CBS element Functions
Message Source (usually outside network operators domain)
¾ Content
¾ Geographical area
¾ Desired Repeat time.
¾ Desired Validity period
¾ Message identifier
CBC (Usually inside network operators domain)
¾ Stores CBS message until updated or deleted by Message Source
¾ Identifies which cells relate to geographic area desired by message
¾ Downloads CBS message once to appropriate BSC with Message ID
NOTE: Interface to Message source is CBC vendor specific and outside the
scope of 3GPP specifications.
BSC/BTS (co-located with a particular cell)
¾ Holds CBS message until deleted or updated by CBC
¾ Re-transmits CBS message at a period defined by CBC
Mobile Phone
¾ Requires CBS to be enabled on the mobile phone
¾ Requires the particular Message ID to be selected in order to display a
particular CBS message
¾ Display of CBS message and MMI is mobile phone vendor specific
NOTE. The following are essential.
¾ Network availability.
¾ Mobile registered.
¾ Good radio coverage.
ITU-T Workshop, October 2006