[asterisk-r2] Libya MFC/R2 issues

[Hashim Kormath]

Hi,

I was trying to configure 4 r2 lines in Libya with Digium TE420.

Issue:  Channels dropping continuously, hard (sometimes works) to make or
receive calls.

Version Info
Asterisk 	:	1.4.21
OpenR2 	:	1.1.0
Zaptel		:	1.4.12.1


Other info

I am using freepbx GUI for extension and trunk creation since you can see it
on the logs.

See the conf and logs 

http://pastebin.com/m77c8c50c


Kindly share any useful information.

thanks in advance

Hashim