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# SIP-I
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public access so far, but very likely private access with next version |
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| 3GPP TS 23.231 |
SIP-I based circuit-switched core network |
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| 3GPP TS 29.231 |
Application of SIP-I Protocols to CS core network architecture |
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| 3GPP TS 29.164 |
Interworking between the 3GPP CS Domain with BICC or ISUP and external SIP-I Networks |
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| 3GPP TS 29.235 |
Interworking between SIP-I based circuit-switched core network and other networks |
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| ETSI EN 383 001 |
Interworking between SIP and BICC Protocol or ISUP |
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