Hi All, We need to modify our freetdm dialer for outbound call when using AT&T 5ESS, which requires prefixing freetdm_isdn.netFac.spec channel variable to freetdm. Is it possible to set "nsf" in freetdm.conf per span. We need this option because we will have assorted spans connected to the board. Does freeTDM support similar conf. shown below of zapata.conf? Is there any configuration file for freeTDM to add this and use it? Some switches (AT&T especially) require network specific facility IE supported values are currently 'none', 'sdn', 'megacom', 'accunet' nsf=none ;Sangoma A102 port 1 [slot:1 bus:3 span: 1] context=from-outside group=1 switchtype => 4ess*nsf=megacom* signalling => pri_cpe pridialplan => unknown channel => 1-23 use_callerid => yes -- regards & thanks -- m nageshwara rao 99891 86280