Cisco 3600 Series Manual de usuario

Cisco IOS Release 12.1(5)T

V.110 Support for Cisco 3600 Series Digital

Modems

This feature implements the V.110 protocol on Cisco digital modem network modules (NM-6DM,

NM-12DM, NM-18DM, NM-24DM, and NM-30DM) for the Cisco 3600 series of routers, and provides

V.110 support for digital modems connected over BRI or PRI interfaces.

This document contains the following sections:

•Feature Overview, page 1

•Supported Platforms, page 2

•Supported Standards, MIBs, and RFCs, page 2

•Command Reference, page 4

•Glossary, page 24

Feature Overview

V.110 is a real-time method of encapsulating varying data rates and the associated RS-232 signals into

a 64-Kbps ISDN B-channel. Using this procedure, asynchronous data rates from 600 bps to 38.4 Kpbs

can be transparently rate-adapted over a single 64-Kbps channel.

V.110 is useful for transporting data over GSM-type mobile phones. V.110 over ISDN support is being

added to the MARS platform to support digital modems in many countries which use E1 with ISDN.

V.110, as an alternative to V.120, is a method of ISDN rate adaption. It provides DTEs with V-series

type interfaces with access to ISDN networks by bit stuffing. Many V.110 devices are used in Europe

and Japan.

Benefits

The V.110 recommendation of the ITU-T rate adapts a low-speed connection to an ISDN B-channel,

allowing the remote station or terminal adapter to use the fast call-setup times offered by ISDN. This

feature enables Global System for Communications (GSM) wireless connectivity.

V.110 Support for Cisco 3600 Series Digital Modems

Supported Platforms

Cisco IOS Release 12.1(5)T

Restrictions

•The BRI interface with V.110 is not supported by the Cisco 3620 router.

•Cisco 3600 series routers require Low Layer Compatability (LLC) information from the Telco

switch.

Related Documents

•Cisco IOS Dial Services Configuration Guide:Terminal Services , Release 12.1

•Cisco IOS Dial Services Command Reference , Release 12.1

Supported Platforms

The following platforms are supported:

•Cisco 3620

•Cisco 3640

•Cisco 3660

The following network modules (NM) support V.110:

•NM-6DM

•NM-12DM

•NM-18DM

•NM-24DM

•NM-30DM

Supported Standards, MIBs, and RFCs

Standards

ITU-T Recommendation V.110

MIBs

No new or modified MIBs are supported by this feature.

To obtain lists of MIBs supported by platform and Cisco IOS release and to download MIB modules,

go to the Cisco MIB web site on Cisco Connection Online (CCO) at

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.

RFCs

No new or modified RFCs are supported by this feature.

V.110 Support for Cisco 3600 Series Digital Modems

Configuration Tasks

Cisco IOS Release 12.1(5)T

Configuration Tasks

There are no configuration tasks. All commands in this feature are existing show modem commands

with modified display output.

Note Cisco 3600 series routers require Low Layer Compatability (LLC) information from the

Telco switch. If you have problems setting up your connection, verify that the Telco switch

supports LLC.

V.110 Support for Cisco 3600 Series Digital Modems

Command Reference

Cisco IOS Release 12.1(5)T

Command Reference

No new commands were added for this feature. However, the output for the following commands was

modified to include V.110 information. All other commands used with this feature are documented in

the Cisco IOS Release 12.1 command reference publications.

•show modem

•show modem log

•show modem configuration

•show modem connect-speeds

•show modem operational-status

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

show modem

To display a high-level performance report for all modems or a single modem, use the show modem

EXEC command.

show modem [slot/port | group number]

Syntax Description

Defaults There are no default behaviors or values for this command.

Command Modes EXEC

Command History

Examples Router# show modem

Codes:

* - Modem has an active call

R - Modem is being Reset

D - Download in progress

B - Modem is marked bad and cannot be used for taking calls

b - Modem is either busied out or shut-down

Avg Hold Inc calls Out calls Busied Failed No Succ

Mdm Time Succ Fail Succ Fail Out Dial Answer Pct.

* 0/0 00:21:01 132 0 0 0 0 0 0 100%

* 0/1 2d01h 1 0 0 0 0 0 0 100%

0/2 00:00:34 130 0 0 0 0 0 0 100%

* 0/3 00:21:53 126 1 0 0 0 0 0 99%

* 0/4 2d01h 1 0 0 0 0 0 0 100%

0/5 00:00:33 131 0 0 0 0 0 0 100%

* 0/6 00:21:12 131 0 0 0 0 0 0 100%

0/7 00:00:34 131 0 0 0 0 0 0 100%

b 0/8 00:00:00 0 0 0 0 0 0 0 0%

b 0/9 00:00:00 0 0 0 0 0 0 0 0%

b 0/29 00:00:00 0 0 0 0 0 0 0 0%

Total: 00:18:25 783 1 0 0 0 0 0 99%

slot/port (Optional) Specifies the location of a slot and modem port. Remember to

include the forward slash (/) when entering this variable.

group number (Optional) Specifies a modem group to which a specified modem belongs.

The group number range is 1 to 200.

Release Modification

11.2 This command was introduced.

12.1(5)T This command was modified to show the output display indicating V.110

support on Cisco 3600 series platforms.

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

The following display shows output information for the show modem command:

Router# show modem

Inc calls Out calls Busied Failed No Succ

Mdm Usage Succ Fail Succ Fail Out Dial Answer Pct.

* 1/0 17% 74 3 0 0 0 0 0 96%

* 1/1 15% 80 4 0 0 0 1 1 95%

* 1/2 15% 82 0 0 0 0 0 0 100%

1/3 21% 62 1 0 0 0 0 0 98%

1/4 21% 49 5 0 0 0 0 0 90%

* 1/5 18% 65 3 0 0 0 0 0 95%

* 1/6 19% 58 2 0 0 0 0 0 96%

* 1/7 17% 67 5 0 0 0 1 1 93%

* 1/8 20% 68 3 0 0 0 0 0 95%

1/9 16% 67 2 0 0 0 0 0 97%

1/10 18% 56 2 0 0 0 1 1 96%

* 1/11 15% 76 3 0 0 0 0 0 96%

* 1/12 16% 62 1 0 0 0 0 0 98%

1/13 17% 51 4 0 0 0 0 0 92%

1/14 16% 51 5 0 0 0 0 0 91%

1/15 17% 65 0 0 0 0 0 0 100%

1/16 15% 73 3 0 0 0 0 0 96%

1/17 17% 67 2 0 0 0 0 0 97%

1/18 17% 61 2 0 0 0 0 0 96%

* 1/19 17% 74 2 0 0 0 0 0 97%

1/20 16% 65 1 0 0 0 0 0 98%

* 1/21 16% 58 3 0 0 0 0 0 95%

* 1/22 18% 56 4 0 0 0 0 0 93%

* 1/23 20% 60 4 0 0 0 0 0 93%

Table 1 describes the fields shown in the previous displays of the show modem command.

Ta b l e 1 s h o w m o d e m Field Descriptions

Field Description

Mdm Slot and modem port number. Also, the following modem states can appear

to the left of a slot/modem port number:

•b—Modem was removed from service with the modem shutdown

command or the modem busyout command.

•B—Modem is suspected to be inoperable or bad. No calls can be made

with this modem. The letter B can also mean that a modem firmware

download failed for the specified modem. In this case, try unmarking

the modem as bad with the no modem bad command and upgrading the

modem firmware.

•d—The RAM-based DSP code, which supports K56flex, is not

configured. The modem will revert to transmitting at 33.6 kbps.

•D—Modem is currently downloading firmware.

•p—Firmware download is pending, typically because one or more

modems is active.

•R—Modem is held and isolated in a suspended state by the modem

hold-reset command.

•T—Modem is conducting a back-to-back test with another modem.

•*—Modem is connected or dialing.

Usage Percentage of the total system uptime that all modems are in use.

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

The following example shows the statistics and current configurations for the manageable modem 2/10.

A dash (-) indicates a field that is not available on basic modems. An x indicates a field that is available

and active on manageable modems. See Table 2 for a description of the fields displayed by the show

modem command.

Router> show modem 2/10

Mdm Typ Status Tx/Rx G Duration TX RX RTS CTS DSR DCD DTR

2/10 V34 Idle 33600/33600 1 00:00:00 x x x x

Modem 2/10, Microcom MNP10 V34 Modem (Select), Async35, TTY35

Firmware (Boot) Rev: 2.1(9) (1.0(5))

Modem config: Incoming and Outgoing

Protocol: reliable/MNP, Compression: V42bis

Management port config: Status polling and AT session

Management port status: Status polling and AT session

TX signals: 0 dBm, RX signals: 0 dBm

Last clearing of "show modem" counters never

0 incoming completes, 0 incoming failures

0 outgoing completes, 0 outgoing failures

0 failed dial attempts, 0 ring no answers, 0 busied outs

0 no dial tones, 0 dial timeouts, 0 watchdog timeouts

0 no carriers, 0 link failures, 0 resets 0 recover oob

0 protocol timeouts, 0 protocol errors, 0 lost events

Connection Speeds 75 300 600 1200 2400 4800

# of connections 0 0 0 0 0 0

Connection Speeds 7200 9600 12000 14400 16800 19200

# of connections 0 0 0 0 0 0

Connection Speeds 21600 24000 26400 28800 31200 33600

# of connections 0 0 0 0 0 1

The following is an output example for a basic V.34 modem module:

Inc calls Number of incoming calls that successfully and unsuccessfully connected

to a modem.

Out calls Number of outgoing calls that successfully and unsuccessfully dialed out

from an available modem.

Busied Out Number of modems that have been manually removed from service.

Failed Dial Number of modems that attempted to dial into the network but failed to

make a connection.

No Answer Number of modems that detected an incoming ring but failed to answer the

call.

Succ Pct. Successful connection percentage of total available modems.

Field Description

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

Note Unavailable fields are marked with dashes (-).

Router# show modem 1/1

Mdm Typ Status Tx/Rx G Duration TX RX RTS CTS DSR DCD DTR

1/1 - Idle 19200/19200 0 00:01:05 - - - - - - -

Modem 1/1, AS5200 Non-Manageable Modem

Firmware (Boot) Rev: Unknown

Modem config: Unknown

Management config: Not Manageable Modem

Last clearing of "show modem" counters never

- incoming completes, - incoming failures

- outgoing completes, - outgoing failures,

0 failed dial attempts, 0 ring no answers, 0 busied outs

0 no dial tones, 0 dial timeouts, 0 watchdog timeouts

- no carriers, - link failures, 0 resets

- protocol timeouts, - protocol errors, - lost events

Connection Speeds 75 300 600 1200 2400 4800

# of connections 0 0 0 0 0 0

Connection Speeds 7200 9600 12000 14400 16800 19200

# of connections 0 0 0 0 0 0

Connection Speeds 21600 24000 26400 28800 31200 33600

# of connections 0 0 0 0 0 0

The following display shows output information for the show modem slot/port command for V.110

modem cards:

Router# show modem 0/1

Mdm Typ Status Tx/Rx G Duration TX RX RTS CTS DSR DCD DTR

0/1 Idle -/- 1 00:00:00 - - - - - - -

Modem 0/1, V.110 Terminal Adaptor (Unmanaged), Async2, TTY2

Firmware (Boot) Rev: Unmanaged (Unmanaged)

Modem config: Incoming and Outgoing

Management config: Unmanaged

Last clearing of "show modem" counters never

- incoming completes, - incoming failures

- outgoing completes, - outgoing failures

0 failed dial attempts, 0 ring no answers, 0 busied outs

- no dial tones, - dial timeouts, 0 watchdog timeouts

- no carriers, - link failures, 0 resets, - recover oob

- protocol timeouts, - protocol errors, - lost events

Connection Speeds 75 300 600 1200 2400 4800

# of connections - - - - - -

Connection Speeds 7200 9600 12000 14400 16800 19200

# of connections - - - - - -

Connection Speeds 21600 24000 26400 28800 31200 32000

# of connections - - - - - -

Connection Speeds 33600 34000 36000 38000 40000 42000

# of connections - - - - - -

Connection Speeds 44000 46000 48000 50000 52000 54000

# of connections - - - - - -

Connection Speeds 56000

# of connections -

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

The type of display output generated from the show modem slot/port command depends on the version

of Cisco IOS software running on the router or access server. For example, the following example shows

an example output for a 56K modem card, which carries digital modems that transmit at 56 kbps.

Note 56K modems do not modulate or demodulate data. A pure digital-to-digital connection is

made.

See Table 2 for a description of the fields displayed by this modem card.

Router# show modem 0/0

Mdm Typ Status Tx/Rx G Duration TX RX RTS CTS DSR DCD DTR

0/0 Idle 0/0 0 00:00:00 x x x x

Modem 0/0, Microcom MNP10 K56 Modem (Select), TTY1

Firmware (Boot) Rev: 3.1(16) (3.0(4))

DSP Controller (SPX) Rev: 1.1(0) (1.1(0))

Modem config: Incoming and Outgoing

Protocol: Normal, Compression: None

Management port config: Status polling and AT session

Management port status: Status polling and AT session

TX signals: 0 dBm, RX signals: 0 dBm

Last clearing of "show modem" counters never

0 incoming completes, 0 incoming failures

0 outgoing completes, 0 outgoing failures

0 failed dial attempts, 0 ring no answers, 0 busied outs

0 no dial tones, 0 dial timeouts, 0 watchdog timeouts

0 no carriers, 0 link failures, 1 resets 0 recover oob

0 protocol timeouts, 0 protocol errors, 0 lost events

Transmit Speed Counters:

Connection Speeds 75 300 600 1200 2400 4800

# of connections 0 0 0 0 0 0

Connection Speeds 7200 9600 12000 14400 16800 19200

# of connections 0 0 0 0 0 0

Connection Speeds 21600 24000 26400 28800 31200 32000

# of connections 0 0 0 0 0 0

Connection Speeds 33600 34000 36000 38000 40000 42000

# of connections 0 0 0 0 0 0

Connection Speeds 44000 46000 48000 50000 52000 54000

# of connections 0 0 0 0 0 0

Connection Speeds 56000

# of connections 0

Receive Speed Counters:

Connection Speeds 75 300 600 1200 2400 4800

# of connections 0 0 0 0 0 0

Connection Speeds 7200 9600 12000 14400 16800 19200

# of connections 0 0 0 0 0 0

Connection Speeds 21600 24000 26400 28800 31200 32000

# of connections 0 0 0 0 0 0

Connection Speeds 33600 34000 36000 38000 40000 42000

# of connections 0 0 0 0 0 0

Connection Speeds 44000 46000 48000 50000 52000 54000

# of connections 0 0 0 0 0 0

Connection Speeds 56000

# of connections 0

V.110 Support for Cisco 3600 Series Digital Modems

show modem

Cisco IOS Release 12.1(5)T

Table 2 describes the fields in the previous four displays, which were created using the show modem

slot/port command. This table applies to all modem module types.

Table 2 show modem slot/port Field Descriptions

Field Description

Mdm Slot and modem number.

Typ Modulation type, which can be any of the following values: Bel103, Bel212,

V110, V21, V22, V22bis, V23, V32, V32bis, VFC, V34, V17, V27, V33

and K56Flx

Status Current status of the modem. Possible values include:

Conn—Modem is connected to a remote host.

B—Inoperable state, which is configured by the modem bad command.

B*—Inoperable state, which is configured by the modem startup-test

command during initial power-up testing.

b—Modem is busied out. This can be manually configured by the modem

busyout line configuration command.

Reset—Modem is in reset mode.

D/L—Modem is downloading firmware.

Bad FW—Downloaded modem firmware is not operational.

Busy—Modem is out of service and not available for calls.

Idle—Modem is ready for incoming and outgoing calls.

Tx/Rx Transmission and receiving speed for the most recently connected call.

G Modem group number assigned to the modem. The group number 0 means

that the modem is not part of any group.

Duration Time duration of the current call or the last call.

Modem functions The following modem functions are displayed on manageable modems. A

field that is available and turned on is marked with an x. An unavailable

field is marked with a dash (-).

•TX—Transmit Data. The DTE device transmits data to the DCE device.

•RX—Receive Data. The DCE device receives data from the DTE

device.

•RTS—Request To Send. The DTE device signals to the DCE device

that the DTE device accepts data into its buffers.

•CTS—Clear To Send. The DCE device signals to the DTE device that

the DCE device accepts data into its buffers.

•DSR—Data Set Ready. The modem is ready to start communication.

•DCD—Data Carrier Detect. The DCE device indicates to the DTE

device that a call is present and established with a remote modem.

Dropping the DCD function terminates the session.

•DTR—Data Terminal Ready. The DTE device indicates to the DCE

device that it accepts calls.

Firmware Installed modem firmware.

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