---
oid: "1.3.12.9"
asn1-notation: "{iso(1) identified-organization(3) icd-ecma(12) private-isdn-signalling-domain(9)}"
description: "ISO/IEC 11572: \"Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Circuit mode bearer services -- Inter-exchange signalling procedures and protocol\""
last-modified: "2009-11-14"
tags: [oid-repository]
---

## OID: `1.3.12.9` (last updated: 2009-11-14)

```asn1
{iso(1) identified-organization(3) icd-ecma(12) private-isdn-signalling-domain(9)}
```

### Description

ISO/IEC 11572: "Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Circuit mode bearer services -- Inter-exchange signalling procedures and protocol" 
 
ISO/IEC 11582: "Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Generic functional protocol for the support of supplementary services -- Inter-exchange signalling procedures and protocol"

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