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series4

 supports SBC is enhanced to support playing tones locally based on SIP Alert-Info header using the IP Signaling Profile (IPSP) acceptAlertInfo flag. Alert-Info header triggers tone generation when a SIP backward response message (180 with or without SDP) is received. The 180 ringing message with Alert-info header can be received before or after cut through. The tone-id included in Alert-Info header is used as a key word in the tone package locally configured on the SBC

Spacevars
0 product

. This feature is supported over the SIP and SIP-I interface.The ISUP MIME body parameters do not have any interaction with Alert-Info header when this feature is used.

Alert-Info header as per RFC-3261 can be received in an INVITE/UPDATE request or in a 180 ringing message. Sonus SBC supports The

Spacevars
0 product

 supports processing of Alert-Info header only in 180 ringing message and plays the tone based on the tone-id as per the format specified by Legacy MS Domain (LMSD) received in the Alert-Info header.

This feature is enabled by enabling the IPSP flag "Accept Alert Info". When this flag is enabled and the Accept Alert Info header is received in a 180 ringing message in the format specified by LMSD specification, SBC processes

Spacevars
0 product

 processes the header and plays the tone locally. By default, this flag is set to disable for backward compatibility purposes.

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The tone as defined above is used as a string to match the tone type specified in the "Signaling Tone Package" associated with the "Tone and Announcement Profile" selected by the PSX for the call. Additionally, it can also be in the format <http:/null>,  indicating that any existing media/tone being played is stopped.

Info
See Refer to Common Ip IP Attributes - Flags and Common Ip IP Attributes - Flags for CLI and EMA changes respectively.

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Note
If a signaling tone is not configured on the SBC Spacevars 0 product , the default tone is used.

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