ramblings

Loading firmware on the Blackberry 7230

by on Aug.22, 2009, under General Jazz

If you are trying to load firmware on a Blackberry 7230 or 7290 with a recent version of the Blackberry Desktop Manager, it will consistently fail. I encountered such a problem this morning. Tried using JL_Cmder, but still no luck. It would would quit with the error “COM error during open”.  It had no problems connecting to the 8700 and 8310 Blackberrys.

I decided to downgrade the Blackberry Desktop Manager to v3.6 which I had laying around on a memory stick. Installed the v3.6 after a quick uninstall of  v4.7. Tried the firmware load on the 7230  and it went through without a hitch. JL_Cmder also works fine now with both the 7230 and 7290.

Issue discussed in  GSMForums.

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Troy and the Draytek 2820Vn

by on Aug.15, 2009, under Networking, VoIP

The Draytek 2820Vn is a great device for home and small-offices. It has two WAN ports; ADSL and Ethernet. Excellent VPN capabilities 32 simultaneous VPN tunnels (IPSec, PPTP, L2TP and L2TP over IPSec.)

In order to get point to point voice working either on VPN or LAN you need to ensure that

  1. the “External IP :” under VoIP -> SIP Accounts is the private IP of the router itself
  2. the SIP account in use is configured with  “Register via  LAN/VPN”
  3. “NAT Traversal Support” is set to “None”

Troy was trying in vain to get voice calls working. We hit on this combination after quite a bit of messing the parameters. The predecessor of the Draytek 2820Vn (the Draytek 2800VG) does not need these fiddly parameters configured and works just fine without these settings. This coupled with the fact that he’s bought 5 of these devices to internetwork the branch offices of a relative’s company, caused this networking boffin a lot of frustration.

Troy has since gone back to meddling with his favourites Cisco and HP ProCurve, thankful to your truly for having helped put this ordeal behind him!

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Asterisk and AVAYA

by on Aug.15, 2009, under VoIP

Some info I posted on ChipOverclock’s blog:

Thot i’d post my experiences with the AVAYA SIP phones.

  • The current version of the firmware for the 46xx phones still doesn’t seem to support the message waiting indicator (MWI) light. And as a side-effect of pending voice mail, these phones seem to think they are not registered after a seeming random period of time, refusing to allow outgoing calls. I had to disable voice mail on all extensions with AVAYA phones. Wasn’t too bad, I could live without the MWI.
  • The 1.xx version of SIP firmware for the 9620/9630/9640 series of phones would register fine on Asterisk, allow outgoing calls but refuse to accept incoming calls.
  • AVAYA have recently release version 2 of the SIP firmware for the 96xx phones. Thought I’d give it a try the other day. I was pleasantly surprised to find that it worked perfectly, including the MWI!! Excellent speaker-phone, and great voice quality.

I’ve been testing it for about 4 days now and am totally happy with the results.

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Infratec PM 8-IP

by on Aug.08, 2009, under General Jazz

Quick glance
A power strip with 8 power outlet sockets and 2 power inlets. Each power port can be turned on or off individually over the network. Support for this product on Infratec’s website appears poor at best with documentation being equally sketchy. e.g., the firmware revision on my PM 8-IP is 2.02, whereas the latest available download on the website is v1.26a.
Details
One would be misled into believing that the dual power inlets ensures power redundancy. Unfortunately not, each power inlet can power its own set of 4 power outlets. Hence not entirely useful for critical datacentre operations.
On the networking front, it runs Ubicom’s IP2022 network processor. The network is up and running in about 2 seconds after power up. Pretty impressive. Power to the network processor/controller is supplied only from one of the power sources.
The console serial port (RJ-9 4P4C socket) running at 9600-N-8-1 can be used to configure the IP address and also for performing a factory reset (highly recommended after a firmware up/downgrade.) The unit can be factory reset by pressing “F” (case sensitive) when at the console menu. In some cases the web server becomes in accessible after a firmware upgrade, and a factory reset is required to bring things back in order.

I constructed a console cable from an old RJ-9 jack and a DE9-F connector. Use the table below to wire up the two connectors:

PM 8-IP (RJ-9 4P4C) PC Serial port (DE-9)
1 (GND) 5 (GND)
2 (TxD) 2 (RxD)
4 (RxD) 3 (TxD)
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Installing WinXP with Intel AHCI drivers

by on Jul.18, 2009, under General Jazz

I was trying to load XPSP2 on an Acer Aspire 4810T. I downloaded the XP AHCI drivers from the Acer site and tried to load the AHCI drivers from the floppy. It refused to give me the AHCI options, only RAID drivers!

Looked around a bit on the floppy and figured that the drivers are there but it doesn’t show up during the install. Haven’t fully figured this out, but the TXTSETUP.OEM needs to be modifed. I modified it and got the AHCI drivers to load successfully from the floppy.

Here’s what you need to do.
1. Open TXTSETUP.OEM in Notepad or any other text editor.
2. Locate the line that says :
scsi = iaStor_ICH8MEICH9ME

3. Change it to read :
scsi = iaAHCI_ICH9MEM

Start the XP install again with F6 and now you will get the option to load the AHCI drivers.

Hoping this helps someone out there.

Post in TechPowerUp

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my experiments with Cisco 7940 IP phone

by on Jun.27, 2009, under VoIP

12:40 AM  09 Dec 2007
Seem to have figured out the strange and seemingly erratic behaviour of the Cisco 7940.

Quick answer… in the SIP<mac_address>.cnf file enable NAT:
# NAT/Firewall Traversal
nat_enable: “1”                ; <—- default is “0”. Have no idea why this works but…
nat_address: “”
voip_control_port: “5061”
start_media_port: “19000”
end_media_port:  “20000”
nat_received_processing: “0”

I chanced on this when poring over the SIP logs. I noticed that the requests from the phone was coming from random ports. The SIP read said…
<— SIP read from 192.168.2.130:50218 —>

… but the Contact: SIp field said…
Contact: <sip:6112@192.168.2.130:5060;transport=udp>

However, * responded…
<— Transmitting (NAT) to 192.168.2.130:50218 —>
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.2.130:5060;branch=z9hG4bK4fba995f;received=192.168.2.130

Further down… i saw….
[Dec  8 17:32:01] VERBOSE[2565] logger.c: Sending to 192.168.2.130 : 50218 (NAT)    ; <—!!
[Dec  8 17:32:01] VERBOSE[2565] logger.c: Using INVITE request as basis request – 0008a326-31d90005-30de60e7-48868c82@192.168.2.130
[Dec  8 17:32:01] VERBOSE[2565] logger.c: Found no matching peer or user for ‘192.168.2.130:50218’

wierd?? Dunno. So * was sending its reponses to the 50218 port in the above case, and obviously the phone wasn’t listening at that port! This meant that the 200 OK responses were not being received by the phone. So finally hit on this setting… didn’t make sense, but tried it coz that would be one setting that would affect source and target ports. It worked! I hope this is the last of my travails with the Cisco 7940 phone. All works fine… including the MWI! 🙂

After this the sip show peers, showed me….
6112/6112                  192.168.2.130    D   N      5061     Unmonitored
^^^^-!!! This came from the NAT/Firewall traversal setting.
Obviously the Phone firmware was using a random port (i.e., ignoring this setting) when used with a nat_enable: 0  setting.

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chatter

by on Jun.27, 2009, under General Jazz

its interesting how easy it is to add a blog engine to your site. It took me about 10 minutes.

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IBM Thinkpad T30 BIOS password

by on Jul.15, 2008, under General Jazz

I came by a IBM Thinkpad T30 with a power on password enabled. The original owner threw it out because he couldn’t remember the password and IBM told him that he had to change the planar (the notebook equivalent of the motherboard.) Followed the instructions on SoDoItYourself and constructed a serial port interface, downloaded the software and I was very quickly able to get the power-on password!

Neat!

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Philips monitors “Aging…”

by on Jun.01, 2007, under General Jazz

Philips 15″ monitors enters the “Aging…” mode when the power button is held down for more than 3 seconds. Switching off the monitor (even for days) does not reset the monitor.
The mode is exit only when the monitor is connected to a PC.

My $0.02 on the subject

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