Command Reference Guide

3Com Router 5000 Family and Router 6000 Family timeslot-set ● 293
Command Reference
Description Use the timeslot-set command to configure the timeslot set to perform R2
signaling and digital E&M signaling configurations.
Use the undo timeslot-set command to cancel the specified timeslot set.
This command applies to E1 voice only.
The Timeslot set is actually the logical subscriber line abstracted from the physical E1
interface, mainly used for configuring R2 signaling, digital E&M signaling and other
voice functions. In one E1 interface only one Timeslot set can be defined. In defining
the timeslot range of Timeslot set, the timeslot range can be distributed is 1-15 and
17-31, and the No.16 timeslot is reserved as the transmission channel of the
out-of-band signaling.
When using the digital E&M signaling delay-start mode (e&m-delay), If the calling side
off-hooks to occupy the trunk line, the connected peer (e.g., PBX) will also enter the
off-hook state to answer the calling party and will remain in that state until it is ready
for receiving the address message. In this case, the PBX enters the hook-up state (this
interval is the delay-dial period). The calling party sends the address message, and PBX
connects this call to the called party, and thus the two parties can begin their
communications.
When the digital E&M signaling e&m-immediate mode is adopted, the calling party
off-hooks to wait for the confirmation of time, and then it sends the dialing address
message to the connected peer such as a PBX. During the process, it does not detect
whether the PBX is ready to receive.
When the digital E&M signaling e&m-wink mode is adopted, the calling party first
off-hooks to occupy the trunk line while the connected peer (e.g., a PBX) remains in
the hook-up state until it receive the connecting signal from the calling party. In this
case, the wink signal sent by the PBX indicates that it has been ready. Upon receiving
the wink signal, the calling party begins to send the address message and the PBX will
connect the call to the called party and thus the two parties can begin their
communications.
Only after establishing TS set successfully can the command subscriber-line be used to
enter the subscriber line and configure the voice-related attributes.
Related Commands ■ subscriber-line
■ cas