Anton Olsen.com

Stompbox: HowTo Switch to Sprint Merlin S620 Linux

Just a quick notice about switching to Sprint from Verizon.

So far the network is more stable but not a lot faster. I don’t get disconnects at all on Sprint where I’d average 2-3 per day on Verizon. I don’t yet have an external antenna adapter and I’m pretty sure that will help with the speed. It helped a bit with the Verizon speed but not stability.

Getting switched over was very easy and just took a couple minutes. I changed the USB IDs for the modem. Check in dmesg or /var/log/messages for these values after you plug the card in the first time. Modify this line in /etc/modules:

usbserial vendor=0×1410 product=0×1110

There were minimal changes to /etc/ppp/peers/1xevdo:

/dev/ttyUSB0
230400
debug
noauth
defaultroute
usepeerdns
crtscts
lock
persist
maxconnect 0
lcp-echo-interval 30
connect ‘/usr/sbin/chat -v -t3 -f /etc/ppp/peers/1xevdo_chat’

I don’t think I made any changes to the chat script /etc/ppp/peers/1xevdo_chat:

TIMEOUT 120
” ‘ATZ’
‘OK’ ‘AT&F0′
‘OK’ ‘ATE0V1′
” ‘AT+CSQ?’
‘OK’ ‘ATDT#777′
‘CONNECT’