FAQ/General and System Issues

Check the following:

1. Make sure the V-Server is powered on.

2. Make sure you are using a good cable for the V-Server to PC connection. 

3. Make sure you choose the right COM port for the PC. Make sure no other device on your PC is using the COM port.

4. Check the user name and password. Contact us if you forgot your user name and password.

5. Try to log into the V-Server using a terminal software, like Hyperternimal. Make sure the "Bits per second", "Data Bits", "Parity", "Stop Bits" and "Flow Control" are set to "9600", "8", "none", "1" and "None" respectively. Click here for a procedure. Use the procedure described in next step if you are unable to log in to the V-Server using any terminal software.

6. If the V-Server is not responding to console login after a failed attempt to update the firmware, please click here for a procedure to fix the problem. 

How to Use the Hyper Terminal with V-Server?

Connect the V-Server Console Port to the PC COM port ( usually a 9-pin female connector) using a DB-9 cable (9-pin cable, one end is male and the other is female). Power on your V-Server. 

Click "Start" Button of your PC screen, click "Program" and then select "Accessories" (on the top of the menu). Click on the "Hyper Terminal" Folder Icon. Note that the Hypertermianl Application is found under the "Communications" folder of the "Accessories" in Windows 98. Click the "Hypertrm" icon. Give a name (such as V-Server) and choose an icon for your connection. Click "OK". Another window will come up. Click from the "Connect Using" dropdown box to select the PC COM port you are using (usually, COM1 orCOM2). If you don't know, choose COM 1 and if this is won't work, go back and choose COM2. Click "OK".

A "Ports Setting" window will appear, set the "Bits per second", "Data Bits", "Parity", "Stop Bits" and "Flow Control" to "9600", "8", "none", "1" and "None" respectively. Click "OK".

A window will appear. Hit the "Enter" key from your key board and you should see the V-Server log on prompt. Supply the correct name and password and you are ready to configure the V-Server using the commands. 

How to Get to the V-Express Command Line?

Connect the V-Server Console Port to the PC COM port ( usually a 9-pin female connector) using a DB-9 cable (9-pin cable, one end is male and the other is female). Power on your V-Server. Open and run V-Express. Click on “Tools” from the menu bar and choose "Command Line".

1720 for H.323 calls and 2077, 2078, 2079 for DDA calls.

Note: for H.323 calls, a number of ports (2 TCP ports for H.225 and H.245 and one for RTP another for RTCP) will be dynamically opened. The port numbers are different for each calls. Firewalls should be able to handle that.

How to Set the EEPROM Status to "unprotected" ? (Rel 2.5 only)

from the command line, type

test eeprom unprotect

VIF (Voice Information Field) and Packet Time Relationship

In the current version of V-Server voice DSP software, the coding profile nominal delay, maximum delay and VIF configuration must follow a rule and It Is pre-configured. This configuration will be changed as automatically adjusted In the future release.

The appropriate VIF sizes to use are related to the Coding type, as shown in the following table (not all of them are listed).

One RTP packet may contains one or more voice frames, depending on the VIF size of the coder.

Smaller VIF size will result in smaller voice packets and greater bandwidth consumption due to the increase of the overhead generated by the network protocols (RTP, UDP, Ethernet or PPP). Larger VIF size will result in bigger voice packets and  smaller bandwidth consumption. However, the voice quality will be affected if any packet losses occurs.

VIF Size and Available Packet Time Relationship

BLANK = Not Available
Bold: Current Default Value of V-Server

The formulas for calculating Nominal Delay (ND) and Maximum Delay (MD) for the Voice Playout Buffer, given the specified Packet Time (PT) are:

ND/PT = k and MD/PT = j

where:

k and j must be integers

k must be ³ 2

j must be ³ k + 2

I Forgot My Password

Please contact our technical support personnel and we will assign you an onetime password.

Console Port Login Fails or V-Server Won't Work after a Failed Attempt to Update the V-Server Firmware

This problem is caused by corrupted EEPROM. The result of this procedure will restore the configuration back to the factory default. Users should re-configure their unit again after opening the factory default profile. Please contact our technical support personnel if this procedure still doesn't address your problem.

1. Turn off the V-Server. Close V-Express or any other program that is using the COM port.

2. Connect the V-Server Console Port to the PC COM port using a DB-9 cable.

3. Click "Start" Button of your PC and click "Program" and then select "Accessories". Click on the "Hyper Terminal" Folder Icon (The Hyperterminal folder is found under Communications folder in Windows 98). Click the "Hypertrm" icon, assign a name (such as V-Server) and choose an icon for your connection. Click "OK".

4. A “Connect To” window will come up. Choose the PC COM port you are using (usually, COM1 orCOM2) from the “Connect Using” dropdown box. If you don't know, choose COM 1 and if this won't work, go back and choose COM2. Click "OK".

5. A "Ports Setting" window will appear, set the "Bits per second", "Data Bits", "Parity", "Stop Bits" and "Flow Control" to "57600", "8", "none", "1" and "None" respectively. Click "OK".

6. A blank window will appear. Turn on the V-Server and in the meantime, hit the “ESC” key repeatedly from the keyboard until a menu titled “TEK DigiTel V-Server Loader Main Menu” appears.  Please note that you have to turn on the V-Server and hit the ESC key simultaneously. Otherwise the loader menu will not appear. Please contact our technical support personnel if you have tried this procedure several times from the beginning and still are unable to bring up the loader menu.

7. Select “3. V-Server Diagnostic” and select “8. System Test Menu” and choose “1. Memory Operation”.  Select  “2. Display and Write EEPROM”.

8. Hit “Enter” key when “Enter address in HEX (0x3000000-0x3007fff):” line is displayed. Enter a Hexadecimal value that is different than the value appears before the last “=” sign on the line. For Example, if the line displays “0x03000000 =     1 = 0xffff =” then you can enter “0x0001”. Enter a “.” (a period mark) on the second line to exit the write mode and close the Hyperterminal window. Turn off the V-Server.  

9. Start the V-Express and log into the V-Server. V-Express will display that the user configuration profile is corrupted. Open the factory default profile and reconfigure your unit.

10.  If you are to update the firmware, you may do it at anytime.

Does the V-Server Product Support Caller ID?

The current version of V-Server iGATE doesn't support Caller ID. However we may be able to support Caller ID through customer requirement. Please contact us for details if you are interested in having this feature.

Does the V-Server Provide CDR (Call Detail Records)?

Yes, the V-Server will generate CDR for billing purpose.

Does the V-Server Have IVR (Interactive Voice Response)?

Yes. From the firmware version 2.9, we provide IVR.

Note: IVR is only supported for the G.723 6.3K codec (the default one). IVR is not available if you are using other codecs.

Does the V-Server Support Pre-paid Calling Card Application?

Yes. From the firmware version 2.9, we provide IVR, PIN and CDR necessary for supporting pre-paid calling card application.

Does the V-Server Product Support MGCP (Media Gateway Control Protocol)?

No, but we are planning to support it. Please contact us if you need more info.

Does the V-Server Product Support SIP (Session Initiation Protocol)?

No, but we are planning to support it. Please contact us if you need more info.