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2676 CHAPTER 175: E1 AND T1 CONFIGURATION COMMANDS
timeslots-list: Timeslot range. Timeslots are numbered 1 through 31 for an E1
interface and 1 through 24 for a T1 interface. TS 16 for an E1 interface (or TS24
for a T1 interface) is used to transmit control signaling.
signal: Specifies a signaling mode for the TS group, which should be consistent
with that adopted by the central office. It includes the following types of signaling:
■ e&m-delay: Adopts the delay start mode of digital E&M signaling.
■ e&m-immediate: Adopts the immediate start mode of digital E&M signaling.
■ e&m-wink: Adopts the wink start mode of digital E&M signaling.
■ fxo-ground: Adopts the FXO ground start mode of digital LGS signaling.
■ fxo-loop: Adopts the FXO loop start mode of digital LGS signaling.
■ fxs-ground: Adopts the FXS ground start mode of digital LGS signaling.
■ fxs-loop: Adopts the FXS loop start mode of digital LGS signaling.
■ r2: Adopts ITU-T Q.421 R2 digital line signaling. This is the one most commonly
used.
Description Use the timeslot-set command to create a TS group and specify a signaling
mode for it on the E1/T1 interface.
Use the
undo timeslot-set command to remove the TS group.
By default, no TS group is configured.
Only after you create a TS group can you use the subscriber-line command to
enter subscriber line view to configure voice-related attributes.
Related command: subscriber line and cas.
n
The timeslot-set command is independent of the DSP resource (voice processing
module, VPM). When no DSP resource is available, though IP calls cannot be
placed, local TDM calls can still be placed. Therefore, you can configure this
command even if no DSP resource is available.
Example # Create TS group 5, including TS1 through TS31 and using R2 signaling.
<Sysname> system-view
[Sysname] controller e1 1/0
[Sysname-e1 1/0] timeslot-set 5 timeslot-list 1-31 signal r2
trunk-direction
Syntax trunk-direction timeslots timeslots-list { dual | in | out }
undo trunk-direction timeslots timeslots-list
View R2 CAS view