Cisco 1751 Краткое руководство по эксплуатации - Страница 23
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Checking FXO Configuration
If you configured your FXO interface according to this example, you can place outgoing calls over the
PSTN. If you have trouble placing calls, use the show voice port command to make sure that the VIC is
installed correctly. Use the show dial-peer voice command to make sure that the data you configured is
correct, and test the PSTN by connecting a handset directly to the PSTN outlet and placing a call.
Refer to the section
Note
of voice connections.
Configuring E&M Interfaces
If you have more than a few voice users at each location, the cost of voice ports and routers and the effort
needed to configure dial peers for all the combinations of origins and destinations increases rapidly. In
this situation, it might be more efficient to use a PBX at each location to switch local traffic and direct
incoming calls and then use E&M VICs to connect the PBXs over an IP network.
Figure 19
telephone network, and the IP network carries voice traffic between the offices. Each PBX connects to
an E&M VIC port in the router.
Figure 19
408 555-xxxx
Destination
To configure E&M voice ports, you need to use the following commands beginning in privileged EXEC
mode:
Command
dial-type {dtmf | pulse}
signal {wink-start | immediate | delay-dial}
cptone {australia | brazil | china | finland |
france | germany | japan | northamerica |
unitedkingdom}
operation {2-wire | 4-wire}
type {1 | 2 | 3 | 5}
78-11259-05
"Tuning Parameters for Real-Time Voice Traffic"
shows a company with two offices, West and East. Each office has a PBX to operate its internal
Linking PBXs over the IP Network (Local Dial Peers)
E&M VIC
0/0
PBX
West
dial-peer voice 111 pots
destination-pattern 1408555....
port 0/0
192.168.11.3
IP cloud
East
Task
Select the appropriate dial type for out-dialing.
Select the appropriate signal type for this
interface.
Select the appropriate voice call progress tone for
this interface.
Select the appropriate cabling scheme for this
voice port.
Select the appropriate E&M interface type.
Cisco 1751 Voice-over-IP Quick Start Guide
Configuring Voice-over-IP
if you need to improve the quality
919 555-xxxx
PBX
Source
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