Multitech MultiVoip Analogue adapters with fax

[Nick44]

Hi All,
I have a site running CM 4.01, with Med-Pro 320 FW33, and patched to latest S/W.
The Multivoips are running the latest FW.
The issue I have is that while I can fax as many pages as I want from multivoip to multivoip, and from multivoip to PSTN, but on an incoming call from the PSTN to a multivoip I can only recieve a maximum of 5 pages.
The multivoip trace log show the following:-
rcv DRQ endpt 129.147.1.101:16002 switch 192.168.100.4:1719 ext 309

14:39:17 UNKNOWN MESSAGE endpt 129.147.1.101:16002 switch 192.168.100.4:1719 e
xt 309

Then bombs out.
Anyone got any ideas while I still have hair left?
Thanks,
Nick.


Speak softly and carry a big switch

 

[Nick44]

Additional Info: The PSTN is an ISDN 30 PRI.

Speak softly and carry a big switch

 

[Nick44]

Seem to have fixed this, but not sure if I have stumbled over a workaround instead of a proper fix.
I have set the Multivoip to peg the max fax baud rate to 9600, and expanded the available bandwidth by using a G729 codec instead of G711.
It now works, but I can't figure out why this should have only presented as an inbound fax problem.



Speak softly and carry a big switch