set callerid only when not an empty value
set callerid only when not an empty value

Star2Billing/newfies-dialer,saydulk/newfies-dialer,newfies-dialer/newfies-dialer,Star2Billing/newfies-dialer,saydulk/newfies-dialer,newfies-dialer/newfies-dialer,romonzaman/newfies-dialer,Star2Billing/newfies-dialer,saydulk/newfies-dialer,romonzaman/newfies-dialer,saydulk/newfies-dialer,newfies-dialer/newfies-dialer,romonzaman/newfies-dialer,newfies-dialer/newfies-dialer,Star2Billing/newfies-dialer,romonzaman/newfies-dialer