valutazioni - 3, GPA: 3.7
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This feature enables GSM wireless connectivity. This document describes the Cisco IOS commands and AT commands required to support V.110 on MICA modems for AS5X00 Access Servers. This MICA V.110 implementation supports 60 modems per board on the Cisco AS5300 and supports other connect standards (V.34, V.90, etc.) in addition to V.110. Modems are not dedicated to V.110 only and are allocated dynamically. On the Cisco AS5200, 30 modems per board is supported and 72 modems per board is supported on the Cisco AS5800. This V.110 implementation for calls on MICA modems are managed by special boardware and modem code, along with the appropriate Cisco IOS image, in a manner similar to other modulation standards. Note This document is in development. Portions of this document may not be complete or developed according to the current documentation standards. This document is subject to revision when the content is available and developed further. Please check the online version periodically until the document is completed according to the usual documentation standards. Feature Summary • Bearer Rate supported range from 600 bps to 38400 bps. • Modem Management is supported. • Modem Log for V.110 calls is supported. • show modem (Number of connections at specific line speeds is supported.) • show modem (Number of calls counters supported) • show modem (Display of Tx/Rx line speeds is supported.) • show modem version is supported. • show modem configuration is supported. • show modem operational-status is supported. • ATDI command is added to AT command set for V.110 modem dialouts. Basic V110 for MICA Modems on Cisco Access Servers 1 Note This feature is distinct from the Asynchronous Management Protocol for V.110 Terminal Adaptor Module that runs in the Cisco AS5200 and Cisco AS5300. Benefits V.110 is a digital link access protocol and for Cisco access servers. It operates over an ISDN B channel. V.110 enables Cisco access servers to connect to ISDN terminal adapters requiring V.110 compatibility. This feature enables GSM wireless connectivity. This ISDN feature is in addition to the existing analog capability of the MICA modems. Also, some digital cellular networks support data applications via V.110 connecting from the cell phone. These networks place these V.110 calls on the PSTN for interconnecting to the ISP of the end-customer's choice. MICA V.110 supports data rates from 600 bps up to 38,400bps. Cisco IOS show commands have been changed to display additional fields reflecting the V.110 capability. See the “Command Reference” section. An added AT command, ATDI, allows the user to command a V.110 modem to originate a V.110 call. See the “Command Reference” section. Restrictions This basic feature allows a V.110 call to be originated and terminated. Synchronous V.110 is not supported. In addition, V.110 calls must terminate on a TTY asynchronous IOS interface. Transmission Speeds/Bearer Rates The following V.110 bearer rates and intermediate rates (ITU-T Recommendation Q.931) are supported: • V.110 Bearer Rates: — 600 bps — 1200 bps — 2400 bps — 4800 bps — 7200 bps — 9600 bps, — 14400 bps — 19200 bps — 28800 bps (not currently supported) — 38400 bps • Intermediate Rates: — 8k — 16k — 32k bps Cisco IOS Release 12.0(4)XI1 Related Features and Technologies — 64k bps Related Features and Technologies This feature requires special modem code to be downloaded to the MICA Modems. See the online CCO modem information page. Related Documents See the modem code online documentation for the platform you are using: • Firmware and Portware Information See also the following documents: • 12.0 Dial Solutions Command Reference (DR) • Cisco AS5800—Modem and System Management Features for the Cisco AS5800 • Online product-specific release notes for the corresponding platforms on the appropriate Cisco IOS release. Start from the appropriate Cisco IOS numbered release on this page: Cisco IOS Software Configuration: Supported Platforms • Cisco AS5200 in Cisco IOS Release 12.(4)XI1 • Cisco AS5300 in Cisco IOS Release 12.(4)XI1 • Cisco AS5800 (not currently supported) Prerequisites Supporting boardware and modem code on the MICA modems and special versions of the CSM on certain platforms. See Firmware and Portware Information, under the “Related Documents” section. Supported MIBs and RFCs The current Modem Management MIB objects for MICA modems will also be used for V.110. One minor change is in the SNMP agent code. This change returns the correct modulation type for V.110 when it does a look up of the modulation for MICA modems. Basic V110 for MICA Modems on Cisco Access Servers 3 List of Terms and Acronyms Boardware— Software that runs on the CPU on the certain supporting cards CSM— Call Switching Module E1— European equivalent of T1, 32 channels of 64KHz, 1 for framing, 1 for signaling GSM— Glob...