Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 108)

6-4

Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note

OL-3008-01

Chapter 6 Configuring the 8-Port and 16-Port FXS RJ-21 Modules

Fine-Tuning FXS Voice Ports

Ring Ground Status is inactive

Tip Ground Status is inactive

Digit Duration Timing is set to 100 ms

InterDigit Duration Timing is set to 100 ms

Ring Cadence is defined by CPTone Selection

Ring Cadence are [4 2] [4 20] * 100 msec

Troubleshooting the Configuration

If you are having trouble placing a call and you suspect the problem is associated with the voice port

configuration, you might be able to resolve the problem by performing one or more of the following

tasks:

Step 1 Ping the associated IP address to confirm connectivity, as follows:

gateway# ping 172.20.59.93

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.20.59.93, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

If you cannot successfully ping your destination, refer to the Network Protocols Configuration

Guide, Part 1.

Step 2 Use the show voice port command to ensure that the port is enabled (administrative state is UP), as

follows:

gateway# sh voice port 4/0

Operation State is DORMANT

Administrative State is UP

If the port state is DOWN, as in the following display, use the no shutdown command to enable the

port. (See the “Activating the Voice Port” section on page 6-6.)

Operation State is DOWN

Administrative State is DOWN

Fine-Tuning FXS Voice Ports

Depending on the specifics of your particular network, you might need to fine-tune the FXS voice port

settings. Under most circumstances, the default values will suffice; however, if you need to change them,

enter the following commands in privileged EXEC mode.

Command Purpose

configure terminal Enters global configuration mode.

voice-port slot_number/port Identifies the voice slot and port number you want to configure, and

enter voice port configuration mode.

input gain value Specifies (in decibels) the amount of gain to be inserted at the

receiver side of the interface. Acceptable values are from –6 to 14.

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