Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 374

Configuration Commands
Parameters loop-timed — The link recovers the clock from the received data stream.
node-timed — The link uses the internal clock when transmitting data.
framing
Syntax framing {sonet | sdh}
Context config>port>sonet-sdh
Description This command specifies SONET/SDH framing to be either SONET or SDH.
Default
sonet
Parameters
sonet — Configures the port for SONET framing.
sdh — Configures the port for SDH framing.
group
Syntax group sonet-sdh-index payload {tu3 | vt2 | vt15}
Context config>port>sonet-sdh
Description This command configures payload of the SONET/SDH group.
For example:
config>port>sonet-sdh#
Default
none
Parameters sonet-sdh-index — Specifies the components making up the specified SONET/SDH path. Depending
tu3 — Specify the Tributary Unit Group (TUG3) on a path. Configures the port or channel for
vt2 — Configures the path as a virtual tributary group of type vt2.
vt15 — Configures the path as a virtual tributary group of type vt15.
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group tug3-1.1 payload tu3
group tug3-1.2 payload vt2
group tug3-1.3 payload vt2
group tug3-2.1 payload vt15
group tug3-2.2 payload vt15
group tug3-2.3 payload tu3
group tug3-3.1 payload tu3
group tug3-3.2 payload tu3
group tug3-3.3 payload tu3
on the type of SONET/SDH port the sonet-sdh-index must specify more path indexes to specify
the payload location of the path.
transport network use.
7750 SR OS Interface Configuration Guide