[Asterisk-Users] ZAPHFC problem

[Edin Kozo]

Hi all,
I have a cheap ISDN card with zaphfc module in TE mode (ptmp). Everything is 
going fine, I can make call from SIP phones to ISDN but sometimes while I'm 
speaking (SIP -> ISDN or ISDN <-SIP) the line just break. After that I can't 
dial or receive calls. Only after reloading zaphfc module I can make and 
receive calls. Anybody know what's happening

Thank you