Did You Know? Call Pickup Service on Xantek Business Systems
by admin
It's a common business scenario. You are working late in the office, and you hear a phone ringing somewhere. It might be important, so you start hunting through the office to find out which phone is ringing. And just as you get there, it stops.
You can avoid this hassle if you add call pickup service to your Xantek Business Phone System. Call pickup allows you to dial a single code on your phone to answer any ringing phone in the office.
Or, it can be customized to answer only calls incertain areas. So, maybe, as Sales Manager, you only want to pick up calls in the Sales department.
There is no charge to add call pickup to any business PBX system. Call us for details: 1-866-553-3833
911 Status
by admin
We have added a menu choice on the left nav bar called "911 Status". Choose this item to get a complete and up to the minute report of the 911 addresses associated with each phone number. This is the address that 911 responders will go to if called.
Also please remember that calls to 911 from caller id's that are not registered with the 911 service will incur a charge of $100 for each 911 call made.
Yealink Phones Security Vulnerability
by admin
We have recently found a security hole in Yealink phones when located on a public IP. Having the phone on a public IP allows hacker access to the phone and extraction of the username and password. We don't really know what paths hackers are using to get the password from the phone. (If anyone knows, we would appreciate hearing from you.)
We recommend you take the following precautions on all such phones:
- Don't put them on a public IP unless absolutely necessary.
- If you must, firewall block all ports below 5000. This should prevent most access paths. Or better, block all IP's except ones that you need to communicate with. 82.192.91.0/24 is a known phone hacking site in Holland, so for sure, block that.
- Upgrade to the latest firmware.
- Use a very secure admin password. Passwords consisting of 9 digits provide a billion combinations. Adding letters and capital letters into the mix increases that number to 13,537,086,546,263,552. (13,000 trillion)
Disaster Failover Plan
by admin
We at Xantek are pleased to announce some recent changes in our disaster fail over plan.
This plan is designed to provide survivability of your phone connections in the event of a major disaster on our end. We have always had backup service provisions, of course, but they have been manually implemented based on alarms received by our key personnel. The new disaster plan is automated and runs 24/7.
Our service depends on three critical server operations:
1. The SIP softswitch, which provides all authentication and switching for inbound and outbound calls.
2. A database server, where we store authentication, routing, and billing information.
3. A STUN server, which allows phones positioned behind NAT's to establish a path to our softswitch.
(These three servers are on three separate machines located in our primary data center outside Chicago.)
The new disaster plan monitors these three servers repeatedly, and in the event of a detected failure, reroutes all of your phones to log in on our backup softswitch, backup database server, or backup STUN server. (All of our backup servers are located in a data center in Norhtern Virginia.)
The new disaster plan relies on remote provisioning to accomplish its rerouting instructions, so it will only work on phones that have remote provisioning established. (We currently have remote provisioning available for Linksys and Yealink phones only.) Conversely, all phones that have remote provisioning set up will automatically receive automated disaster prevention.
Here is the scenario of a critical server failure:
1. The status monitor checks the status of servers every 5 minutes, so the average time to detect a failure is 2.5 minutes.
2. Upon detection of a failure, the status monitor rewrites all of the provisioning files with the new addresses.
3. Phones request provisioning information every 60 seconds, so the average time to reprovision a phone is 30 seconds.
4. At this point the phone will go through its reboot cycle; the phones will show that they are rebooting. Depending on the phone, rebooting takes anywhere from 30 to 60 seconds.
So, in most cases, it will be 3.5 to 4 minutes for the system to detect a failure and get the phones working again.
You need do nothing to take advantage of these services; they are being implemented this week on all phones which have remote provisioning. (This includes all of our business service phones, and many single user phones as well.) If you would like to add a phone to this system, it is only necessary to include remote provisioning in the phone setup. Call us if you need to get the correct entry for your phone.
Telephone numbers WITHOUT 911 Service
by admin
05/07/12 04:23:00 pm,