portspec

SDX 821-t (XGS-PON ONT, 2.5G)

Adtran modem, desktop or wall. 1 × 2.5GBASE-T, 1 × GPON.

Adtran SDX 821-t (XGS-PON ONT, 2.5G), front, drawn from its port list

Generated drawing. Port count and types are from the data; port positions are approximate.

Ports

PortTypeSpeedSideNotes
eth12.5GBASE-T2.5Gfront—
ponGPON2.5Gfront—

Specifications

Vendor
Adtran
Type
Modem
Mounting
Desktop or wall
Ports
2
Also known as
SDX 821-t

Source: a manual entry, not verified against the vendor.

YAML

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# Adtran SDX 821-t (XGS-PON ONT,  2.5G)
# Converted from the punchdown catalog on 2026-11-10. Source of the data: curated. No official page is recorded in the sources.
network: 1
imports:
  - ../../defaults/types.network.yaml
models:
  adtran/sdx-821-t:
    name: SDX 821-t (XGS-PON ONT,  2.5G)
    vendor: Adtran
    role: modem
    aliases: [ SDX 821-t ]
    ports:
      eth1: { type: 2.5gbase-t }
      pon: { type: gpon, label: PON }
    x-family: ont
    source:
      x-from: curated