Verifying Articulation Ports
After physically abutting analog or agenda accessories to a Cisco voice-enabled router, you
might charge to affair show, test, or alter commands to verify or troubleshoot your configuration.
For example, the afterward account enumerates six accomplish to adviser and troubleshoot
voice ports:
Step 1. Pick up the handset of an absorbed telephony accessory and analysis for a dial
tone. If there is no punch tone, analysis the following:
■ Is the bung durably seated?
■ Is the articulation anchorage enabled?
■ Is the articulation anchorage accustomed by the Cisco IOS?
■ Is the router active the actual adaptation of Cisco IOS in adjustment to recognize
the module?
■ Is a punch associate configured for that port?
Step 2. If you accept a punch tone, analysis for DTMF articulation bandage tones, such as touch-tone
detection. If the punch accent stops back you punch a digit, the articulation anchorage is probably
configured properly.
Step 3. Use the appearance articulation anchorage command to verify that the abstracts configured is correct.
If you accept agitation abutting a call, and you doubtable that the problem
is associated with voice-port configuration, you can try to boldness the problem
by assuming accomplish 4 through 6.
Step 4. Use the appearance articulation anchorage command to accomplish abiding the anchorage is enabled. If the
port is administratively down, use the no abeyance command. If the anchorage was
working ahead and is not alive now, it is accessible the anchorage is in a hung
state. Use the shutdown/no abeyance command arrangement to reinitialize the
port.
Step 5. If you accept configured E&M interfaces, accomplish abiding the ethics associated with
your specific PBX bureaucracy are correct. Specifically, analysis for two-wire or fourwire
wink-start, immediate-start, or delay-start signaling types, and the E&M
interface type. These ambit charge to bout those set on the PBX for the
interface to acquaint properly.
Step 6. You charge affirm that the articulation arrangement bore (VNM) (that is, the module
in the router that contains the articulation ports) is accurately installed. With the
device powered down, abolish the VNM and reinsert it to verify the installation.
If the accessory has added slots available, try inserting the VNM into another
slot to abstract the problem. Similarly, you charge move the articulation interface
card (VIC) to addition VIC aperture to actuate whether the botheration is with the
VIC agenda or with the bore slot.
For your reference, Table 3-6 lists six appearance commands for acceptance the voice-port
configuration.
Table 3-6 Commands to Verify Articulation Ports
Command Description
show articulation anchorage Shows all voice-port configurations in detail
show articulation anchorage slot/subunit/port Shows one voice-port agreement in detail
show articulation anchorage arbitrary Shows all voice-port configurations in brief
show articulation busyout Shows all ports configured as busyout
show articulation dsp Shows cachet of all DSPs
show ambassador T1 | E1 Shows the operational cachet of a controller
provides sample achievement for the appearance articulation anchorage command.
Example 3-7 appearance articulation anchorage Command
162 Authorized Self-Study Guide: Cisco Articulation over IP (CVOICE)
Router#show articulation port
Foreign Exchange Base 0/0/0 Aperture is 0, Sub-unit is 0, Anchorage is 0
Type of VoicePort is FXS VIC2-2FXS
Operation State is DORMANT
Administrative State is UP
No Interface Bottomward Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Aphasiac is disabled
Non Linear Beginning is -21 dB
Music On Hold Beginning is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP aphasiac is disabled
Echo Cancellation NLP beginning is -21 dB
Echo Cancel Coverage is set to 64 ms
Echo Cancel affliction case ERL is set to 6 dB
Playout-delay Approach is set to adaptive
Playout-delay Nominal is set to 60 ms
Example 3-8 provides sample achievement for the appearance articulation anchorage arbitrary command.
Example 3-8 appearance articulation anchorage arbitrary Command
router#show articulation anchorage summary
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
========= == ============ ===== ==== ======== ======== ==
0/0/0 — fxs-ls up abode on-hook abandoned y
0/0/1 — fxs-ls up abode on-hook abandoned y
50/0/11 1 efxs up abode on-hook abandoned y
50/0/11 2 efxs up abode on-hook abandoned y
50/0/12 1 efxs up abode on-hook abandoned y
50/0/12 2 efxs up abode on-hook abandoned y
For your added reference, Table 3-7 provides a alternation of commands acclimated to analysis Cisco
voice ports. The analysis commands accommodate the adequacy to assay and troubleshoot voice
ports on voice-enabled routers. As Table 3-7 shows, you can use bristles analysis commands to
force articulation ports into specific states to analysis the articulation anchorage configuration. The csim start
dial-string command simulates a alarm to any end base for testing purposes.
Table 3-7 analysis Commands
Command Description
test articulation anchorage port_or_DS0-group_identifier Forces a detector into specific states for
detector {m-lead | battery-reversal | arena | testing.
tip-ground | ring-ground | ring-trip} {on |
off | disable}
test articulation anchorage port_or_DS0-group_identifier Injects a analysis accent into a articulation port. A call
inject-tone {local | network} {1000hz | charge be accustomed on the articulation anchorage under
2000hz | 200hz | 3000hz | 300hz | 3200hz | test. Back you are accomplished testing, be sure
3400hz | 500hz | quiet | disable} to use the attenuate advantage to end the test
tone.
test articulation anchorage port_or_DS0-group_identifier Performs loopback testing on a articulation port. A
loopback {local | arrangement | disable} alarm charge be accustomed on the articulation port
under test. Back you accomplishment the loopback
testing, be abiding to use the attenuate advantage to
end the affected loopback.
test articulation anchorage port_or_DS0-group_identifier Tests relay-related functions on a articulation port.
relay {e-lead | bend | ring-ground |
battery-reversal | power-denial | arena |
tip-ground} {on | off | disable}
test articulation anchorage port_or_DS0-group_identifier Forces a articulation anchorage into fax or articulation mode
switch {fax | disable} for testing. If the articulation anchorage does not detect
fax data, the articulation anchorage charcoal in fax mode
for 30 abnormal and again reverts automatically
to articulation mode. After you access the test
voice anchorage about-face fax command, you can
use the appearance articulation alarm command to check
whether the articulation anchorage is able to accomplish in
fax mode.
csim alpha dial-string Simulates a alarm to the defined punch string.
This command is best advantageous back testing
dial plans.