MX-2600 fax issue

[Hoss99]

I have a customer who has 5 MX-2600's. all of them are able to send faxes but they cannot recieve them. They are using voice over IP with an analog converter. any help would be great. thanks.

[DavePo]

Turn off ECM. Slow down reception rate to 9600 or 7200. Check bandwidth of the convertor. If it has a bandwidth saver turned on try with off.

[Hoss99]

i have turned off the ECM and slowed down the reception with no luck. I'll try turning the bandwidth off. thanks

[mojorolla]

May sound silly but check the phone cords. Had a customer last week went from AT&T to Time Warner for the ISP. Time Warner used a four line phone cord and killed faxing; could send but not receive. Use a two line phone cord.
On FXX2 and FXX3, I use these soft switch settings and they work 90% of the time:
SW 27: 00111111
SW 28: 11111101
SW 29: 01000101
SW 72: 01000110
If that doesn't work, it is the phone line. Have the customer call the ISP and ask if the their packetization is 10 milliseconds or less OR the line supports G711 or T.38 codecs. Most likely, they will have no idea wtf you are talking about; always gives me a good chuckle.

[Hoss99]

Thanks for the info. Hopefully it will resolve the issue

[Akitu]

May sound silly but check the phone cords. Had a customer last week went from AT&T to Time Warner for the ISP. Time Warner used a four line phone cord and killed faxing; could send but not receive. Use a two line phone cord.
On FXX2 and FXX3, I use these soft switch settings and they work 90% of the time:
SW 27: 00111111
SW 28: 11111101
SW 29: 01000101
SW 72: 01000110
If that doesn't work, it is the phone line. Have the customer call the ISP and ask if the their packetization is 10 milliseconds or less OR the line supports G711 or T.38 codecs. Most likely, they will have no idea wtf you are talking about; always gives me a good chuckle.

I just have to ask my customers if they have an analog or a digital phone line and they have no idea wtf I'm talking about. After the headache goes away it gives me a good chuckle as well.