Cisco 3600 Series User manual

1
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
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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
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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
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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
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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
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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
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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
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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
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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
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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.