Ericsson RBS 2106 Reference Manual page 304

Short Message Service
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The SMS P-P MT function is initiated when an ESTABLISH
REQUEST message for a SAPI-3 link is received from the BSC.
SMS P-P MT messages are transmitted as transparent L3 (Layer 3)
messages (in acknowledged mode), on a SAPI-3 link between the
network and the MSs.
SAPI-3 link establishment and release is made on request from BSC.
The function is terminated when a RELEASE_CONFIRM message is
sent to the BSC, as a result of a SAPI-3 link release.
35.2.2 SMS Point-to-Point, Mobile Originated RBS
RBS supports:
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See section above for:
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The SMS P-P MO function is initiated when a SABM frame (link layer
connection) is received from an MS. SMS P-P MO messages are
transmitted as transparent L3-messages (in acknowledged mode), on a
SAPI-3 link between the network and the MSs.
SAPI-3 link establishment and release is made on request from MS.
The function is terminated when a RELEASE_INDICATION message
is sent to the BSC, as a result of a SAPI-3 link release.
35.2.3 SMS Cell Broadcast
This procedure is used by the BSC to request the RBS for transmission
of SMS cell broadcast messages on the logical channel CBCH/
GSM:08.58:5.6/.
The BSC handles the queuing and repetition of the SMSCB messages,
taking the capacity of CBCH into account.
Supported Logical Channels /GSM:05.02:3.3.5/:
CBCH
Supported Channel Combinations /GSM:05.02:6.4/:
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302 (485)
(ii) TCH/H(0.1) + FACCH/H(0.1) + SACCH/TH(0.1)
(v) FCCH+SCH+BCCH+CCCH+SDCCH/4(0..3)+SACCH/
C4(0..3)
(vii) SDCCH/8(0..7) + SACCH/C8(0..7)
(viii) TCH/F + FACCH/F + SACCH/M
Establishment of a SAPI-3 link
Transparent transmission of SMS messages
Release of a SAPI-3 link
Supported logical channels
Supported channel combinations
(v) FCCH + SCH + BCCH + CCCH + SDCCH/4[0.1,3] +
SACCH/C4[0.1,3] + CBCH
(vii) SDCCH/8[0.1,3..7] + SACCH/C8[0.1,3..7] + CBCH
© Ericsson Radio Systems AB
— All Rights Reserved —
Cell Broadcast Channel, allocated on
SDCCH sub-channel 2
EN/LZT 720 0008 P2A
2001-11-28