Voice Subscriber Line; Voice Entity - 3Com MSR 50 Series Configuration Manual

Voice Subscriber Line

Voice Entity

Table 73 Description of the voice function configuration procedure
Step Operation
6 Configure number substitution for the dial plan adopted
in the network diagram.
7 Configure the following voice protocols according to the
service and networking environment.
H.323 protocol
■
SIP protocol
■
Fax protocol
■
8 Check whether the network requirements can be met.
If yes, the configuration is completed.
If no, check and remove the fault and perform
re-configuration.
Voice subscriber line configuration is to implement the functions of the voice
subscriber line. Voice subscriber lines, which are connected to telephone network
devices such as analog telephone and PBX, implement all physical layer functions
between VoIP gateways and PSTN devices. These functions include power supply
to analog telephones, off-hook state detection, ringing signal generation,
receiving & sending of analog or digital voice calls, and receiving & sending of
dialed digits for call routing.
For the voice subscriber line configuration, refer to
Configuration" on page 2245
Set" on page 2316. The router provides the following voice subscriber lines:
Foreign exchange station (FXS) analog voice subscriber line, namely, FXS
■
interface. FXS interfaces are usually connected foreign exchange office (FXO)
subscriber line terminals, for example, an ordinary analog telephone, to provide
ringing current, ringing voltage, and dial tone.
FXO analog voice subscriber line, namely, FXO interface or 2-port loop trunk
■
interface. FXO interfaces are usually connected to analog telephone interfaces
of PSTN central offices (PBXs).
Ear & mouth or receive & transmit (E&M) analog voice subscriber line, namely,
■
E&M interface. E&M interfaces support analog E&M signaling and divide each
voice connection into trunk circuit side and signaling unit side (similar to the
relationship between DCE and DTE). PBXs send signals to routers via M lines
and receive signals from routers via E lines.
Digital E1/T1 voice subscriber line, namely, timeslot (TS) group created on an
■
E1/T1 interface. After TS groups and signaling types (for example, R2 signaling,
digital E&M signaling, or digital LGS signaling) are configured on E1 voice
interface cards, the system will automatically generate the corresponding voice
subscriber lines for the TS groups. E1/T1 interfaces support R2, DSS1, QSIG,
and digital E&M signaling.
Voice entity configuration is to implement the functions of the voice entity. For the
configuration of the voice entity, refer to
2265.
Voice Function Configuration
"Voice Subscriber Line
and "Configuring the Voice Subscriber Line for a TS
"Voice Entity Configuration" on page
2237
Reference
Dial Plan in Voice
Volume
H.323, SIP, and FoIP
in Voice Volume.
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