The "Capabilities-Exchange-Answer" Diameter command code
The "Capabilities-Exchange-Answer" Diameter command uses the command code "257".
It is part of the Diameter Base Accounting, Relay applications.
It is defined in the 3GPP TR 29.909: Diameter-based protocols usage and recommendations in 3GPP specification.
It contains the following AVPs:
| AVP code | AVP name | AVP type | AVP requirement |
|---|---|---|---|
| 268 | Result-Code | Enumerated | Required (1) |
| 264 | Origin-Host | DiameterIdentity | Required (1) |
| 296 | Origin-Realm | DiameterIdentity | Required (1) |
| 257 | Host-IP-Address | IPAddress | Required (1) |
| 266 | Vendor-Id | VendorId | Required (1) |
| 269 | Product-Name | UTF8String | Required (1) |
| 278 | Origin-State-Id | Unsigned32 | Optional (up to 1) |
| 281 | Error-Message | UTF8String | Optional (up to 1) |
| 279 | Failed-AVP | Grouped | Optional |
| 265 | Supported-Vendor-Id | VendorId | Optional |
| 258 | Auth-Application-Id | AppId | Optional |
| 299 | Inband-Security-Id | Enumerated | Optional |
| 259 | Acct-Application-Id | AppId | Optional |
| 260 | Vendor-Specific-Application-Id | Grouped | Optional |
| 267 | Firmware-Revision | Unsigned32 | Optional (up to 1) |
< Capabilities-Exchange-Answer > ::= < Diameter-Header: 257 >
{ Result-Code }
{ Origin-Host }
{ Origin-Realm }
{ Host-IP-Address }
{ Vendor-Id }
{ Product-Name }
[ Origin-State-Id ]
[ Error-Message ]
* [ Failed-AVP ]
* [ Supported-Vendor-Id ]
* [ Auth-Application-Id ]
* [ Inband-Security-Id ]
* [ Acct-Application-Id ]
* [ Vendor-Specific-Application-Id ]
[ Firmware-Revision ]
| Update source | Insertion date |
|---|---|
| 3GPP | 2026-04-26 07:12 |
| 3GPP | 2026-04-26 07:12 |