FXS Articulation Anchorage Configuration
In North America, the FXS anchorage affiliation functions with absence settings best of the
time. The aforementioned cannot be said for added countries and continents. Remember, FXS ports
look like switches to the bend accessories that are affiliated to them. Therefore, the configuration
of the FXS anchorage should challenge the about-face agreement of the bounded PSTN.
For example, accede an all-embracing aggregation that has offices in the United States and
England. Anniversary PSTN provides signaling that is accepted for its own country. In the United
States, the PSTN provides a punch accent that is altered from the punch accent in England. The
signals that arena admission calls are altered in England. Another instance area the
default agreement ability be afflicted is back the affiliation is a block to a PBX or
key system. In anniversary of these cases, the FXS anchorage charge be configured to bout the settings
of the accessory to which it is connected.
In this example, you accept been assigned to configure a articulation aperture to avenue calls to a
plain old blast account (POTS) buzz affiliated to a FXS anchorage on a alien router in
Great Britain. Figure 3-15 shows how the British appointment is configured to accredit groundstart
signaling on FXS articulation anchorage 0/2/0. The call-progress tones are set for Great Britain,
and the arena accent is set for arrangement 1.
Chapter 3: Routing Calls over Analog Articulation Ports 145
Liverpool Articulation Port
0/2/0
V
WAN
Figure 3-15 FXS Agreement Topology
The requirements for your agreement are the following:
■ Configure the articulation anchorage to use ground-start signaling.
■ Configure the call-progress tones for Great Britain.
You would again complete the afterward achieve to achieve the declared objectives:
Step 1. Enter voice-port agreement mode.
Router(config)#voice-port slot/port
Step 2. Select the admission signaling blazon to bout the telephony affiliation you are
making.
Router(config-voiceport)#signal {loopstart | groundstart}
Note If you change arresting type, you charge assassinate a abeyance and no abeyance command
on the articulation port.
Step 3. Select the two-letter area for the articulation alarm advance tones and added localespecific
parameters to be acclimated on this articulation port.
Router(config-voiceport)#cptone locale
Step 4. Specify a arena pattern. Anniversary arrangement specifies a ring-pulse time and a ringinterval
time.
Router(config-voiceport)#ring accent {pattern-number | define
pulse interval}
Step 5. Activate the articulation port.
Router(config-voiceport)#no shutdown
Example 3-1 shows the complete FXS articulation anchorage configuration.
Note The patternXX keyword provides preset ring-cadence patterns for use on any platform.
The ascertain keyword allows you to actualize a custom arena cadence.
Router(config)#voice-port 0/2/0
Router(config-voiceport)#signal groundstart
Router(config-voiceport)#cptone GB
Router(config-voiceport)#ring accent pattern01
Router(config-voiceport)#no shutdown