Cisco 3600 Series Konfigurationshandbuch - Seite 3

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Cisco 3600 Series Konfigurationshandbuch
PBX—Private Branch Exchange. Privately-owned central switching office.
PLAR—Private Line Auto Ringdown. This type of service results in a call attempt to some
particular remote endpoint when the local extension is taken off-key.
POTS—Plain Old Telephone Service. Basic telephone service supplying standard single line
telephones, telephone lines, and access to the public switched telephone network.
POTS dial peer—Dial peer connected via a traditional telephony network. POTS peers point to a
particular voice port on a voice network device.
PSTN—Public Switched Telephone Network. PSTN refers to the local telephone company.
PVC—Permanent virtual circuit.
QoS—Quality of Service. QoS refers to the measure of service quality provided to the user.
RSVP—Resource Reservation Protocol. This protocol supports the reservation of resources across
an IP network.
Trunk—Service that allows quasi-transparent connections between two PBXs, a PBX and a local
extension, or some other combination of telephony interfaces to be permanently conferenced
together by the session application and signaling passed transparently through the IP network.
VoIP dial peer—Dial peer connected via a packet network; in the case of Voice over IP, this is an
IP network. VoIP peers point to specific VoIP devices.
Prerequisite Tasks
Before you can configure your Cisco 3600 series router to use Voice over IP, you must first:
After you have analyzed your dial plan and decided how to integrate it into your existing IP network,
you are ready to configure your network devices to support Voice over IP.
Establish a working IP network. For more information about configuring IP, refer to the
"IP Overview," "Configuring IP Addressing," and "Configuring IP Services" chapters in the
Network Protocols Configuration Guide, Part 1.
Install the one-slot or two-slot (NM-1V/NM-2V) voice network module into the appropriate bay
of your Cisco router. For more information about the physical characteristics of the voice network
module, or how to install it, refer to the installation documentation, Voice Network Module and
Voice Interface Card Configuration Note, that came with your voice network module.
Complete your company's dial plan.
Establish a working telephony network based on your company's dial plan.
Integrate your dial plan and telephony network into your existing IP network topology. Merging
your IP and telephony networks depends on your particular IP and telephony network topology.
In general, we recommend the following suggestions:
— Use canonical numbers wherever possible. It is important to avoid situations where
numbering systems are significantly different on different routers or access servers in your
network.
— Make routing and/or dialing transparent to the user—for example, avoid secondary dial tones
from secondary switches, where possible.
— Contact your PBX vendor for instructions about how to reconfigure the appropriate PBX
interfaces.
Configuring Voice over IP for the Cisco 3600 Series VC-15
Prerequisite Tasks