Trouble with Credit Card terminal but faxing works great

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affled:
Hi fellas,
I have one OBI202 with 2 accounts registered to Vitelity, one for each port.
Port 1 is connected to a fax machine and has been working virtually flawlessly.  But port 2, configured identical to port 1, connected to a Credit Card terminal Verifone Omni 5100 fails frequently and if it goes through is very slow.
Can anyone help me with getting this configured properly?

In the codec section everything is defaut except:
G729 is       disabled
G726 is       disabled
Fax event is enabled

Shale:
There are limited things you can try. I would try the gain settings to see if one of those helps.

Here is what I did for better voice levels:

Configuration
  Physical Interfaces
    Phone 1->ChannelTxGain   = -3 (what I switched to from 0)
    Phone 1->ChannelRxGain   = 12 (what I switched to from 0)

affled:
Thank you for the suggestion.
I will give that a try and see if it is improved.

obiliving:
Modem is sensitive to jitter buffer adjustments during a call. Your OBi can detect FAX tone and will switch off jitter buffer adjustment when FAX is detected (it might even switch to T.38/FAX Relay if the call peer also supports it). That makes your FAX work better.

However there is no Modem signal detection support.
There is a new feature in the latest firmware (3.0.1.4109) that may help (do a f/w upgrade first).
It allows you to disable jitter buffer adjustment for the next outgoing call, by dialing a *code (of your choice). This is what you can do: Add a Star Code (under Star Code Profile) like this:

*01, Modem Call, set($Noji1,200),set($Noec1,1),set($Cdm1,3)

The 3 set() commands tell the obi to do the following for the next outbound call:
1. Disable Jitter Buffer Adjustment, and use a fixed jitter buffer length of 200 ms
2. Disable Echo Canceller
3. Use only G711u and G711a codec

Replace *01 with any code you like, as long as it does not conflict with other codes.
Then dial the target number and see if the modem call works better.
Note that this only controls the OBi; the quality will still be affected by the behavior of the call peer and any network impairment. Good luck.

affled:
Unfortunately changing the gain values had no effect on the CC terminal communication.

Thank you obiliving I'm currently on 4041 will give that a try...
Any way to force that feature without dialing a star code?  That port is used solely for the CC terminal and would be difficult to reprogram the terminal to dial the star code first.

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