Finalmente tive a oportunidade de pegar uma das placas 3G, com chip da Claro. Uma das vantagens da migração do FreeBSD pro Linux é justamente a facilidade no reconhecimento de novos hardwares. A placa foi identificada de imediato pelo meu OpenSuse 11:
usb usb7: configuration #1 chosen from 1 choice hub 7-0:1.0: USB hub found hub 7-0:1.0: 1 port detected usb usb7: New USB device found, idVendor=1d6b, idProduct=0001 usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb7: Product: OHCI Host Controller usb usb7: Manufacturer: Linux 2.6.25.20-0.4-default ohci_hcd usb usb7: SerialNumber: 0000:03:00.1 usb 6-1: new full speed USB device using ohci_hcd and address 2 usb 6-1: configuration #2 chosen from 1 choice usb 6-1: New USB device found, idVendor=0fce, idProduct=d0b2 usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 6-1: Product: Sony Ericsson PC300 usb 6-1: Manufacturer: Sony Ericsson usb 6-1: SerialNumber: 3579310101884440 cdc_acm 6-1:2.1: ttyACM0: USB ACM device cdc_acm 6-1:2.3: ttyACM1: USB ACM device usbcore: registered new interface driver cdc_acm drivers/usb/class/cdc-acm.c: v0.25:USB Abstract Control Model driver for USB modems and ISDN adapters usb0: register 'cdc_ether' at usb-0000:03:00.0-1, CDC Ethernet Device, 02:80:37:0a:03:00 usbcore: registered new interface driver cdc_ether usb0: no IPv6 routers present
O driver cdc_acm foi carregado automaticamente.
Para fazer a discagem, instalei o aplicativo wvdial, velho companheiro dos tempos de modem discado, à 14400 bps. Utilizando o wvdialconf, a placa 3G é automagicamente identificada:
Editing `/etc/wvdial.conf'. Scanning your serial ports for a modem. Modem Port Scan<*1>: S0 S1 ttyS2<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud ttyS2<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud ttyS2<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up. Modem Port Scan<*1>: S3 ttyS4: No such device or address Modem Port Scan<*1>: S4 ttyS5 : No such device or address Modem Port Scan<*1>: S5 ttyS6 : No such device or address Modem Port Scan<*1>: S6 ttyS7 : No such device or address Modem Port Scan<*1>: S7 WvModem<*1>: Cannot get information for serial port. ttyACM0<*1>: ATQ0 V1 E1 -- OK ttyACM0<*1>: ATQ0 V1 E1 Z -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttyACM0<*1>: Modem Identifier: ATI -- PC300 ttyACM0<*1>: Speed 4800: AT -- OK ttyACM0<*1>: Speed 9600: AT -- OK ttyACM0<*1>: Speed 19200: AT -- OK ttyACM0<*1>: Speed 38400: AT -- OK ttyACM0<*1>: Speed 57600: AT -- OK ttyACM0<*1>: Speed 115200: AT -- OK ttyACM0<*1>: Speed 230400: AT -- OK ttyACM0<*1>: Speed 460800: AT -- OK ttyACM0<*1>: Max speed is 460800; that should be safe. ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK WvModem<*1>: Cannot get information for serial port. ttyACM1<*1>: ATQ0 V1 E1 -- OK ttyACM1<*1>: ATQ0 V1 E1 Z -- OK ttyACM1<*1>: ATQ0 V1 E1 S0=0 -- OK ttyACM1<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK ttyACM1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK ttyACM1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK ttyACM1<*1>: Modem Identifier: ATI -- PC300 ttyACM1<*1>: Speed 4800: AT -- OK ttyACM1<*1>: Speed 9600: AT -- OK ttyACM1<*1>: Speed 19200: AT -- OK ttyACM1<*1>: Speed 38400: AT -- OK ttyACM1<*1>: Speed 57600: AT -- OK ttyACM1<*1>: Speed 115200: AT -- OK ttyACM1<*1>: Speed 230400: AT -- OK ttyACM1<*1>: Speed 460800: AT -- OK ttyACM1<*1>: Max speed is 460800; that should be safe. ttyACM1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK Found an USB modem on /dev/ttyACM0. Modem configuration written to /etc/wvdial.conf. ttyACM0 : Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0" ttyACM1 : Speed 460800; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
Esperava ver mais velocidade, mas 460k já é melhor que nada. Infelizmente a configuração padrão não funcionou de jeito nenhum. Vasculhando google afora, encontrei o link de configuração para outro tipo de modem, o E-226:
Adaptei a mesma para o PC300, como mostra meu /etc/wvdial.conf abaixo:
[Dialer Defaults] Carrier Check = off Init1 = ATZ Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Password = claro Ask Password = 0 Check Def Route = 1 Phone = *99***1# Idle Seconds = 0 Modem Type = Analog Modem Stupid Mode = 1 Compuserve = 0 Baud = 460800 Auto DNS = off Dial Command = ATDT Modem = /dev/ttyACM0 ISDN = 0 Username = claro [Dialer claro3g] Stupid Mode = on Password = claro Auto Reconnect = off Username = claro Phone = *99***1#
Também precisei editar o arquivo /etc/ppp/peers/wvdial para desabilitar as opções de compressão:
plugin passwordfd.so noauth name wvdial debug kdebug 9 record /tmp/pppd.dump noccp novj novjccomp
Com isso consegui a conexão via 3G, bastando digitar wvdial.
--> WvDial: Internet dialer version 1.60 --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 OK --> Modem initialized. --> Sending: ATDT*99***1# --> Waiting for carrier. ATDT*99***1# ~[7f]}#@!}!}!} }9}#}%B#}%}(}"}'}"}"}&} } } } }%}&n>}/qzY~ CONNECT --> Carrier detected. Starting PPP immediately. --> Starting pppd at Fri Jul 31 21:34:15 2009 --> Pid of pppd: 14211 --> Using interface ppp0 --> Authentication (CHAP) started --> Authentication (CHAP) successful --> local IP address 189.94.168.217 --> remote IP address 10.64.64.64 --> Script /etc/ppp/ip-up run successful --> Default route Ok. --> Nameserver (DNS) Ok. --> Connected... Press Ctrl-C to disconnect
Não é muito rápido, mas ajuda muito em locais sem opção de Internet, como quando estou dentro do site de clientes.
