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Glossary

SCP (Service Communication Proxy) in 3GPP: meaning and where it is specified

Published 2026-10-16Updated 2026-10-16

At a glance

Term
SCP
Stands for
Service Communication Proxy
Defined in
3GPP TS 23.501 V20.3.0, clause 6.2.19
TR 21.905 also lists
Service Control Point
Used in
TS 29.500, TS 29.570, TS 33.501

In plain words

In 3GPP TS 23.501, SCP functionality includes "Message forwarding and routing to destination NF/NF service.", so it can pass service messages onward to a destination network function. TS 23.501 also lists indirect communication and delegated discovery among SCP functions, while noting that some or all may be supported in one instance. 3GPP uses the SCP in TS 29.500, TS 29.570, and TS 33.501. TS 29.500 says more than one may be present between an NF Service Consumer and Producer, while TS 29.570 says it offers services to NWDAF and DCCF.

Source: 3GPP TS 23.501 V20.3.0, clause 6.2.19. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.501/23501-k30.zip

Sources

  1. 3GPP TS 23.501 V20.3.0, clause 6.2.19. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/23_series/23.501/23501-k30.zip
  2. 3GPP TS 33.501 V16.20.0, clause 5.9.2.4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/33_series/33.501/33501-gk0.zip
  3. 3GPP TS 29.500 V17.16.0, clause 6.10.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.500/29500-hg0.zip
  4. 3GPP TS 29.570 V20.1.0, clause 4.1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/29_series/29.570/29570-k10.zip

How this page was made

The facts box comes straight from the 3GPP TDoc list and specification archive as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.