Release Notes for Cisco MICA Portware Version
2.7.2.0 on Cisco AS5x00 Universal Access
Servers
November 25, 2001
These release notes describe Cisco MICA Portware Version 2.7.2.0 with Cisco IOS software on
Cisco AS5x00 universal access servers and Cisco 3600 series routers.
The features supported in Cisco MICA Portware Version 2.7.2.0 provide higher initial transmit connect
speeds, increased connection stability, better throughput, and higher connect success rates (CSRs) than
previous Cisco MICA portware versions.
This document includes the following sections:
•
New Features for Version 2.7.2.0, page 1
•
Compatibility Requirements, page 6
•
Known Problems with Cisco MICA Version 2.7.2.0, page 9
•
Problems Resolved with Cisco MICA Version 2.7.2.0, page 9
•
Downloading Portware Modem Code, page 10
•
Related Links, page 11
•
Obtaining Documentation, page 12
•
Obtaining Technical Assistance, page 12
New Features for Version 2.7.2.0
The following feature is new in this release.
Dial Modifiers—(CSCdk10292)
Dial modifiers X, W, and (,) are now supported where the following is true.
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2002. Cisco Systems, Inc. All rights reserved.
New Features for Version 2.7.2.0
Table 1
Dial Modifiers for Cisco MICA Modems
Dial
Modifier
Definition
X
Switch to in-band DTMF mode for any subsequent digits remaining in the ATD string.
The X dial modifier has been added to serve as a delimiter for the host when
processing the dial string. Allows Cisco MICA portware to be used in many
environments that do not support DTMF dialing (for example, PRI).
W
Wait for dial tone then switch to in-band DTMF mode for any subsequent digits
remaining in the ATD string. The W dial modifier also acts as a delimiter between the
primary and secondary sections of the dial string, so no additional X modifier is
needed. Once either an X or a W has been parsed in the dial string, any additional X
modifiers are ignored. Additional W modifiers cause Cisco MICA to wait for a dial
tone.
,
Delay: Number of seconds in S8. Default is 2 seconds.
The (,) dial modifier is treated as a silent DTMF tone for the duration of seconds
specified in S8. The (,) is only acted upon after the call switching module (CSM) has
been transitioned into DTMF mode which requires that it either follow an X or a W in
the dial string or that the T1/E1 is configured for DTMF signaling.
The W and (,) modifiers work similarly to those used in a standalone analog modem.
In the following example dial string, the portion of the string before the X is dialed for the given line
type used in your configuration. All digits after the X generate the appropriate DTMF tones:
atdt5551234x,,567
For more information about the X, W, and (,) dial modifiers, refer to the Cisco MICA Modem Dial
Modifiers for Cisco AS5300, Cisco AS5400, and AS5800 Universal Access Servers document.
Existing Features for Version 2.7.2.0
The following features continue to be supported with Cisco IOS Release 12.1(5)T.
Call Tracker
Call Tracker expands the call handling and real-time monitoring capabilities of the Cisco AS5x00
universal access servers.
Internet Protocol Device Control (IPDC) Protocol—(CSCdp33808)
This release supports the IPDC protocol for call control signaling. 1000 Hz and 1004 Hz Configure
Continuity Testing (COT) tones can be generated at 0 dbm0
V.110 Speeds—(CSCdm43898)
New V.110 rates have been added for the ratified Q.931 recommendation: 38400, 28800, 24000, and
12000 bps. The following V.110 user rates (ISDN Q.931 bearer cap) are now supported: 600, 1200, 2400,
4800, 7200, 9600, 12,000, 14,400, 19,200, 24,000, 28,800, and 38,400 bps.
Existing Features for Version 2.7.2.0
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New Features for Version 2.7.2.0
Decoupled V.90 Power Levels—S39/S59 (CSCdm52396)
You can set the transmit level for V.34 (using S39) separately from the transmit level for V.90 (using
S59). The default for S59 is 6 (-12dBm). The default for S39 is 7 (-13dBm). The S-register values for
S39 (V.34 transmit levels) and S59 (V.90 transmit levels) have not changed.
Value
Definition
0
-6dBm
1
-7dBm
2
-8dBm
3
-9dBm
4
-10dBm
5
-11dBm
6
-12dBm (default for S59 in Cisco MICA Portware Version
2.7.1.3 and higher
7
-13dBm (default for S39 in Cisco MICA Portware Version
2.7.1.3 and higher)
8
-14dBm
9
-15dBm
10
-16dBm
11
-17dBm
12
-18dBm
13
-19dBm
14
-20dBm
15
-21dBm
The following S-register caveats apply to decoupling the V.34 and V.90 power levels:
•
Cisco MICA Version 2.7.2.0 allows setting the V.34 transmit power level (via S39) independently
from the V.90 transmit power level (via S59).
•
The V.34 and V.90 transmit power levels cannot be set hotter than -6dBm.
•
The default for V.34 transmit power is S39=7 (-13dBm) for all countries except Japan (-15dBm).
•
When the country code for Japan is entered (modem country mica japan), the actual transmit level
will always be -15dBm.
•
When the USA country code is entered (modem country mica usa), the default V.34 transmit power
level is -13dBm (S39=7) and the default V.90 transmit power level is -12dBm (S59=6). Due to FCC
restrictions, if a value lower than 6 (-12dBm) for S39 or S59 is selected, the modem reports OK but
does not act on the command.
S54 General Capabilities Register—(CSCdp40871)
New values have been added for the S54 general capability register (default S54=136). The values shown
below enable power control (CSCdk11008) and allow a 0.5 increment for the SQ value.
The bit field values in S54 are as follows.
Existing Features for Version 2.7.2.0
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3
New Features for Version 2.7.2.0
Value
Definition
0
All general options disabled
1
Reserved for future release
2
Enable aggressive client capping
4
Force four-point training
8
Enable power control
16
Enable EC quality checking
32
Cap receive (Rx) rate to 26,400 when detecting PCTEL Modem
(CSCdm45403)
64
Enable parity over EC (CSCdj92333)
128
Enable 0.5 increment for SQ value via S32 (CSCdp40871 - see
below)
256
DSP reset enable (CSCdp94025)
Signal Quality (SQ) Threshold Changes
Bit 7 in S54 corresponds to a 0.5 increment to the signal quality threshold beginning with
Cisco MICA Version 2.7.2.0. This bit is set by default (see the description of S54 above).
This bit value works in conjunction with S32 to set the effective SQ threshold and to determine
Cisco MICA receive speed. S32 is set to 2 and S54 bit 7 is set so that the effective SQ threshold is 2.5.
The table below illustrates the relationship between the S-register settings, the effective SQ threshold,
the trigger Bit Error Rate (BER), and the receive speed for a given signal-noise ratio (SNR)/bandwidth.
S-Register
Settings
Note
•
S32=2
•
Bit 7 in S54 is
clear
•
S32=2
•
Bit 7 in S54 is
set
•
S32=3
•
Bit 7 in S54 is
clear
Effective SQ
Threshold
BER Threshold
Receive Rate
3200Hz/33dB
Receive Rate
3429Hz/37dB
2
1:1000
26,400
31,200
2.5
1:10^3.5
24,000
28,800
3
1:10,000
21,600
26,400
The receive speeds are for illustration only.
Improved Parity Support
Prior to the integration of CSCdj92333, Cisco MICA supported parity over async (non-error-controlled
or EC) connections only. Cisco MICA Version 2.7.2.0 supports parity over EC as well as async
connections. To use this feature, set bit 6 in S54, set S12 to 7, and set S13 to the desired parity setting
from the following list:
Existing Features for Version 2.7.2.0
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New Features for Version 2.7.2.0
•
0 for 7N1
•
1 for 7E1
•
2 for 7O1
For example, to enable 7 databits and even parity for EC and async connections, given the default value
of S54 (136), use the &F&D2S12=7S13=1S54=200 modemcap where the following is true.
Value
Definition
&F
Reset to factory defaults
&D2
Do not reset to factory defaults upon trainup failure
S12=7
7 data bits
S13=1
Even parity
S54=200
Bit-mapped register
8
Enable power control (default)
64
Enable parity over EC
128
Enable 0.5 SQ value increment (default)
Client Modems for V.90 Digital Impairment Learning (DIL) Detection
Additional client modems have been added for DIL detection. For V.90 connections, DIL index values
can be seen by entering the show modem operational-status x/y command in the Parameter #16 Tx
Preemphasis Index:
as2# show modem operational-status 1/7
[ ... ]
Parameter #8 Connected Standard: V.90
Parameter #9 TX,RX Bit Rate: 45333, 28800
Parameter #16 TX,RX Preemphasis Index: 21, 1
In this case, the Tx Preemphasis Index value of 21 signifies that this client is a Conexant ACF. The
following table shows additional values displayed in Parameter #16 when the show modem
operational-status x/y command is used.
Value
Modem Tested
20
Unknown or DIL sequence not found.
21
Conexant (Rockwell) ACF—MultiTech V.90, Diamond
Supra Express, Zoom 2949
22
USR—USR model 0520, Sportster 0648
23
Lucent Venus—Zoom 2949L
24
PCTel —EigerComm 7.6005MS, BTC 7.6101MS
25
Lucent winmodem—Firmware 5.39, 5.66
26
Conexant (Rockwell)—Soft 56K V1.44 Best Data
27
DSI—Digicom V4.43-012-T-PI
28
Cirrus Logic—DSP patch 97
Existing Features for Version 2.7.2.0
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5
Compatibility Requirements
Compatibility Requirements
Supported Platforms
Cisco MICA Portware Version 2.7.2.0 is supported on the following platforms:
•
Cisco AS5300
•
Cisco AS5800
•
Cisco 3600
Refer to the Cisco AS5x00 and Cisco 3600 Cisco MICA 6-Port and 12-Port Modem Module
Portware/Cisco IOS Software Compatibility Matrixes.
Note
For a list of modems tested with Cisco MICA portware, use the following link:
http://www.cisco.com/warp/public/cc/pd/as/as5350/prodlit/ctngy_ai.htm
Note
For Cisco IOS software release compatibility information, refer to the Cisco AS5300 Universal Access
Servers Release Notes.
Compatibility Requirements
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Portware Features
Portware Features
Table 2
Portware
Version
2.7.2.0
2.7.1.0
Feature Content by Modem Version
Feature Content
Maintenance release. New features added to existing 2.7.1.0 features.
Cisco IOS Software Release 12.1(5) support.
•
W, X, and (,) dial modifiers
•
Call Tracker
•
Support for IPDC protocol for call control signaling
•
Additional V.110 speeds (CSCdm43898): 38,400, 28,800, 24,000, 12,000 bps
•
Additional dial modifiers (CSCdk10292)1
•
Decoupled V.90 power levels for S-registers S39 and S59 (CSCdm52396)
•
New values for S54 general capabilities register (CSCdp40871)
•
Signal quality threshold changes
•
Parity for error controlled connections (CSCdj92333)
•
Added client modems for V.90 DIL detection
Feature release. New features added to existing Version 2.6.2.0 features.
•
V.110 ISDN rate specification
•
spe download command
•
Cisco AS5800 supported on Cisco IOS Release 12.0(5)T only
Modulation
2.6.2.0
•
ITU-T Recommendation Q.931 V.110 Bearer Rates:
1200 bps, 2400 bps, 4800 bps, 7200 bps, 9600 bps, 14,400 bps, 19,200 bps,
38,400 bps.
•
ITU-T Recommendation Q.931 Intermediate Rates:
8k, 16k, 32k, and 64k bps.
Maintenance release. New features added to existing Version 2.6.1.0 features.
Signaling
•
Resource Pool Management (RPM):
– Ring-back tone generation.
Port Management
•
2.6.1.0
Improved port management interfacing for acquiring modem/port data for AAA
records.
SS7 support added to Version 2.5.1.0 features.
Signaling
•
Continuity Testing (COT) of DSO channels in SS7 networks.
Portware Features
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7
Portware Features
Table 2
Feature Content by Modem Version (continued)
Portware
Version
Feature Content (continued)
2.5.1.0
V.90 and RFC-2217 dialout support for fax/data.
Note
The Cisco DialOut Utility (CDU) is no longer supported. Refer to the
Cisco DialOut Utility End of Sale/Shipping bulletin and the
Sample NAS Configurations for Cisco DialOut Utility document for
information.
Modulation
2.3.1.0
•
V.90 standard supporting rates of 56,000 to 28,000 in 1333.3-bps increments.
•
Fax out (transmission) Group 3, standards EIA 2388 Class 2 and EIA 592 Class
2.0, at modulations V.33, V.29, V.27ter, V.21, and V.17.
R1 support plus K56flex maintenance.
Signaling
•
2.2.3.0
R1 noncompelled and semicompelled.
K56flex support.
Modulation
•
2.0.1.7
Rockwell K56flex at 56000 to 32000 in 2000 bps increments.
Initial V.34+ release.
Modulation
•
ITU-T V.34 Annex 12 at 33600 and 31200 bps.
•
ITU-T V.34 at 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200,
4800, or 2400 bps.
•
V.32bis = 14400, 12000, 9600, 7200, 4800; V.32 = 9600, 4800; V.22bis = 2400,
1200; V.21 = 300; Bell212A = 1200, Bell103 = 300; V.22 = 1200;
V.23 = 1200/75.
Signaling
•
MF
•
DTMF
•
R2 compelled, noncompelled, and semicompelled.
Protocols
•
ITU-T V.42 (including MNP 2-4 and LAPM) Error Correction.
•
ITU-T V.42bis (1K nodes) and MNP 5 Data Compression.
Modem Standard
•
ITU-T V. 25—Automatic calling or answering equipment on dialup lines. This
standard includes the procedures for disabling echo control devices for calls that
are established manually and automatically.
1. Dial modifiers will be available in a future release.
Portware Features
8
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Known Problems with Cisco MICA Version 2.7.2.0
Known Problems with Cisco MICA Version 2.7.2.0
This section describes known problems with portware Version 2.7.2.0. If a workaround is not provided,
a solution is being developed.
Bugs
•
CSCdr24044—Vendor winmodem 5.75 code does not train in V.90 with Cisco MICA.
•
CSCdp67281—Cannot make a 12K V.110 connection with vendor TA.
If you have an account with Cisco Connection Online (CCO), you can use Bug Navigator II to find
caveats of any severity for any Cisco software release. You can reach Bug Navigator II on CCO at
Service & Support: Online Technical Support: Software Bug Toolkit
Or at
http://www.cisco.com/support/bugtools
For information about Cisco IOS software bugs and features for Cisco IOS release 12.1T, refer to the
Release Notes for Cisco AS5300 Universal Access Servers for Cisco IOS Release 12.1 T and the Caveats
for Cisco IOS Release 12.1 T.
If you have an account on Cisco Connection Online (CCO), you can use Bug Navigator II to find caveats
of any severity for any release.
Problems Resolved with Cisco MICA Version 2.7.2.0
•
CSCdj92333—Cisco MICA needs to handle parity for EC connections
•
CSCdk10292—Cisco MICA modems do not handle dial modifiers
•
CSCdk62959—at%r does not display all S-registers
•
CSCdm23597—Cisco MICA receives speed drops to 19,200 during data flow
•
CSCdm33941—Portware sometimes sends 2-digit detected messages
•
CSCdm35576—Cisco MICA disconnect reasons have needless not-OK/NG status
•
CSCdm40552—V.90 pad compensation should default to on (S52=1)
•
CSCdm43898—Add V.110 rates in newly Ratified Q.931 recommendation
•
CSCdm45403—PCTEL fails file transfer protocol sessions (FTPs) at 31200 to Cisco MICA
•
CSCdm45963—Version 2.7.1.0 should be more backward compatible for Cisco IOS releases
•
CSCdm46186—Class 2.0 fax not working
•
CSCdm52304—Config mail index for data bits/parity/stop bits broke
•
CSCdm52396—Decoupled V.90 power levels
•
CSCdm63989—PCTEL modem does not connect in V.90
•
CSCdm66142—Need enhanced status reporting in Version 2.7.1.1 release.
•
CSCdm85869—BM internal modem will not connect in flex to Cisco MICA
•
CSCdm89317—S54 =4 will not force 4-point training in V90
•
CSCdm92733—High number of retrains and low throughput with USR V90 modem
Known Problems with Cisco MICA Version 2.7.2.0
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9
Downloading Portware Modem Code
•
CSCdm92993—More client modems need to be added to V.90 DIL detection
•
CSCdm94000—Low CSR connecting global service (GSM) for mobile communications with V110
•
CSCdp01031—ATI3 command needs cleaning up
•
CSCdp03761—Auto answer delay does not work
•
CSCdp33808—Support 1000 Hz and 1004 Hz tones at 0 dbm0
•
CSCdp34524—Not ok displayed for modem op-status parameter #0 type=5
•
CSCdp40871—Implement a 0.5 increment for the signal quality threshold
•
CSCdp53541—Register S51(PCM minimum connect rate) does not work for K56flex
•
CSCdp61257—Init CONFREQ and CONFREJ fail to make wire with autoselect in portware
•
CSCdp63932—Cisco MICA frames Rx Bad counter (#38) broken
•
CSCdp93596—New S-register defaults for portware Version 2.7.1.3
•
CSCdp94025—Need Digital Signal Processor (DSP) reset feature tied to S-register
•
CSCdr22157—Dial modifier on channelized T1 (CT1) causing dial-out failure
•
CSCdr24758—PPP negotiation failures with 2.7.1.3 versus Linux, Mac
Downloading Portware Modem Code
Cisco supports portware configuration using service processing element (SPE) configuration commands
and modem-pool commands. The spe command allows portware to be downloaded to the SPE. The spe
command is available for use with Cisco IOS Software Release12.0(4)XI1, 12.0(5)T, and higher.
The copy xxxx modem command on the Cisco AS5300 will no longer be available for
Cisco MICA portware and Cisco 56K Microcom modem firmware download beginning with
Cisco IOS Software Release 12.0(4)XI1 and higher. The existing modem portware and firmware
configurations in the router will be converted to the SPE format so that functionality is not lost.
For 56K systems running Cisco IOS Software Release 12.0(4)XI1, 12.0(5)T, 12.1(2)XD, or higher, use
the spe command to download firmware.
Note
If you enter the copy xxxx modem command on an access server running Cisco IOS Release 12.0(4)XI1,
12.0(5)T, 12.1(2)XD, or higher, you are prompted to use the spe command.
SPE Download Tasks
To download modem portware/firmware using the spe command, enter the spe command, one
configuration command per line.
Step 1
Enter the spe command and subcommands, one configuration command per line:
Router# configure terminal
Router(config)# spe <slot>/<spe_begin> <slot>/<spe_end>
Router(config-spe)# firmware location system:/ucode/mica_port_firmware
Router(config-spe)# ^Z
Downloading Portware Modem Code
10
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Related Links
For example, the following display shows a Cisco AS5300 SPE download to all modems in Slot 1 (that
is, all modems on a feature card containing ten 6-port modem modules). The modem code resides in the
Flash memory, and the modem code filename is mica-modem-portware.2.7.2.0.bin.
Router(config)# spe 1/0 1/9
Router(config-spe)# firmware location flash:mica-modem-portware.2.7.2.0.bin
Step 2
Copy the configuration from NVRAM into running RAM:
Router# copy running-config startup-config
Download occurs when the modems become available and shows the SPE firmware upgrade option
defined (default: busyout). The spe command generates NVRAM modem download and configuration
file entries.
If the configuration is not saved as described above, download of the portware specified with the
spe command will not occur after the next reboot.
Note
For detailed information on the spe command, go to the following link:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t7/spe1206t.htm
Modem-Pool Download Tasks
To download modem portware/firmware via FTP if you are using Cisco IOS Software Release 12.0(5)T
or earlier, use the Cisco Software Center link provided at the following URL:
•
For Cisco AS5200, AS5300, or AS5800 universal access servers:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/as5xipmo/mostats.htm
•
For Cisco 3600 series routers:
http://www.cisco.com/kobayashi/sw-center/access/3600.shtml
Related Links
For further information about Cisco MICA portware and Cisco IOS software, see the following related
sources:
•
PIAFS Wireless Data Protocol for Cisco MICA Modems, Version 2.1
•
Cisco IOS Release 12.2 Master Indexes
•
AT Command Set and Register Summary for MICA 6-Port Modules
•
SPE and Firmware Download Enhancements
•
Cisco AS5300 universal access servers Cisco MICA release notes index page
•
Cisco AS5x00 Cisco MICA 6-Port and 12-Port Modem Module Portware/Cisco IOS Software
Compatibility Matrixes
•
Cisco AS5300 access servers, Appendix A, “Managing Modems,” and Appendix B, “Rom Monitor,”
in the Cisco AS5300 Universal Access Server Software Configuration Guide
•
Modem Management Commands
Modem-Pool Download Tasks
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11
Obtaining Documentation
•
Cisco IOS Dial Services Command Reference for Cisco IOS Software Release 12.2
•
Cisco IOS Dial Technologies Configuration Guide, Release 12.2
•
Quick Start Guide, Cisco AS5300 Universal Access Server Install and Configure
Note
The Cisco DialOut Utility (CDU) is no longer supported. Refer to the Cisco DialOut Utility End
of Sale/Shipping bulletin and the Sample NAS Configurations for Cisco DialOut Utility
document for information.
Obtaining Documentation
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com,
http://www-china.cisco.com, or http://www-europe.cisco.com.
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships with
your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current
than printed documentation. The CD-ROM package is available as a single unit or as an annual
subscription.
Ordering Documentation
Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation
through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.
Nonregistered CCO users can order documentation through a local account representative by calling
Cisco’s corporate headquarters (California, USA) at 408 526-4000 or, in North America, call
800 553-NETS (6387).
Obtaining Technical Assistance
Cisco provides Cisco Connection Online (CCO) as a starting point for all technical assistance. Warranty
or maintenance contract customers can use the Technical Assistance Center. All customers can submit
technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response
card included in many printed docs, or by sending mail to Cisco.
Obtaining Documentation
12
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Obtaining Technical Assistance
Cisco Connection Online
Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online is the
foundation of a suite of interactive, networked services that provides immediate, open access to Cisco
information and resources at anytime, from anywhere in the world. This highly integrated Internet
application is a powerful, easy-to-use tool for doing business with Cisco.
CCO’s broad range of features and services helps customers and partners to streamline business
processes and improve productivity. Through CCO, you will find information about Cisco and our
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Customers and partners can self-register on CCO to obtain additional personalized information and
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to their relationships with Cisco.
You can access CCO in the following ways:
•
WWW: www.cisco.com
•
Telnet: cco.cisco.com
•
Modem using standard connection rates and the following terminal settings: VT100 emulation;
8 data bits; no parity; and 1 stop bit.
– From North America, call 408 526-8070
– From Europe, call 33 1 64 46 40 82
You can e-mail questions about using CCO to [email protected].
Technical Assistance Center
The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract
customers who need technical assistance with a Cisco product that is under warranty or covered by a
maintenance contract.
To display the TAC web site that includes links to technical support information and software upgrades
and for requesting TAC support, use www.cisco.com/techsupport.
To contact by e-mail, use one of the following:
Language
E-mail Address
English
[email protected]
Hanzi (Chinese)
[email protected]
Kanji (Japanese)
[email protected]
Hangul (Korean)
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Spanish
[email protected]
Thai
[email protected]
In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers
and TAC e-mail addresses worldwide, consult the following web site:
http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.
Cisco Connection Online
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13
Obtaining Technical Assistance
Documentation Feedback
If you are reading Cisco product documentation on the World Wide Web, you can submit technical
comments electronically. Click Feedback in the toolbar and select Documentation. After you complete
the form, click Submit to send it to Cisco.
You can e-mail your comments to [email protected].
To submit your comments by mail, for your convenience many documents contain a response card
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We appreciate and value your comments.
This document is to be used in conjunction with the Cisco MICA portware and Cisco IOS software documents.
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