16. SUPPLEMENTARY SERVICES
16.16 AT+CSSN Supplementary Service Notification
Description | Command | Possible Responses | |
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Presentation of | AT+CSSN=[<n>[,<m>]] | • | +CME ERROR <err> |
notification result |
| • | OK |
codes from TA to TE |
| • ERROR | |
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Read the current | AT+CSSN? | • | +CSSN: <n>,<m> |
setting |
| • | +CME ERROR <err> |
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| • OK | |
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| • ERROR | |
Test if the command is | AT+CSSN=? | • | +CSSN: (list of |
supported |
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| supported <n>s),(list |
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| of supported <m>s) |
• +CME ERROR <err>
• OK
• ERROR
This command refers to supplementary service related network initiated notifications. The set command enables or disables the presentation of notification result codes from TA to TE.
When <n>=1 and a supplementary service notification is received after a mobile originated call setup, unsolicited result code +CSSI: <code1>[,<index>] is sent to TE before any other MO call setup result codes presented in this ETS or in V.25ter. When several different <code1>s are received from the network, each of them shall have its own +CSSI result code.
When <m>=1 and a supplementary service notification is received during a mobile terminated call setup or during a call, or when a forward check supplementary service notification is received, unsolicited result code +CSSU: <code2>[,<index>] is sent to TE. In case of MT call setup, result code is sent after every +CLIP result code (refer command “Calling line identification presentation +CLIP”) and when several different <code2>s are received from the network, each of them shall have its own +CSSU result code.
Note! The difference between <index> and <cindex> is that <index> is a position mark while <cindex> is a unique value for each CUG. <index> is not supported.
Test command returns values supported by the TA as a compound value.
<n> | Description |
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0 | Disable the +CSSI result code presentation status in the TA |
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1 | Enable the +CSSI result code presentation status in the TA |
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LZT 123 7361 R1A
