Alcatel-Lucent 7750 Configuration Manual page 490

Interfaces
unframed-ds1 — Specifies ds-1 unframed (G.703) mode for DS-1 interfaces. This parameter allows the
configuration of an unstructured DS-1 channel on a CES MDA. In G.704, timeslot 0 is used to carry
timing information by a service provider, thus, only 31 slots are made available to the end user. In
G.703, all 32 time slots are available to the end user. Timing is provided by the end user. When an e1-
unframed channel is shutdown, it sends the AIS pattern to the far-end DS-1 which does not react. The
operational status remains up and no alarms are generated while the near-end (shutdown) is operation-
ally down. This is normal behavior since the G.703 option does not have framing. G.703 framing is only
applicable for FR, PPP, and C-HDLC encapsulations.
framing (E-1)
Syntax framing {no-crc-g704 | g704 | e1-unframed}
Context config>port>tdm>e1
Description
This command specifies the E-1 framing to be used with the associated channel.
Default
g704
Parameters
g704 — Configure the E-1 port for G.704 framing.
no-crc-g70 — Configures the E-1 for G.704 with no CRC4.
e1-unframed — Specifies E-1 unframed (G.703) mode for E-1 interfaces. This parameter also allows the
configuration of an unstructured E-1 channel on an ASAP or CES MDA. In G.704, timeslot 0 is used to
carry timing information by a service provider, thus, only 31 slots are made available to the end user. In
G.703, all 32 time slots are available to the end user. Timing is provided by the end user. When an e1-
unframed channel is shutdown, it sends the AIS pattern to the far-end E-1 which does not react. The
operational status remains up and no alarms are generated while the near-end (shutdown) is operation-
ally down. This is normal behavior since the G.703 option does not have framing. G.703 framing is only
applicable for FR, PPP, and CHDLC and CEM encapsulations.
framing (DS3)
Syntax framing {c-bit | m23 | unframed-ds3}
Context config>port>tdm>ds3
Description This command specifies DS-3 framing for the associated DS-3 port or channel.
Default c-bit
Parameters
c-bit — Configures the DS-3 port/channels for C-Bit framing.
m23 — Configures the DS-3 port/channel for M23 framing.
unframed-ds1 — Specifies ds-3 unframed mode for DS-3 interfaces. This parameter allows the configura-
tion of an unstructured DS-3 channel on a CES MDA.
Page 490 7750 SR Interface Configuration Guide