I must admit I don't remember what CLIP and CLOP is - and my Q.931 experience is getting a bit rusty. Can you get a snoop of L3 out and in so I can see what you send and what the switch responds back? I prefer to use Called and Calling - The numbers contain a few bits that tell what number this is. The most common are unknown, national and international. These bits must match the actual number you send. The 10 digit number is a unknown, the 11 digit is a national. International start with 00 nn On top of that you will face that modern switches are quite capable and able to configure whatever behaviour they want per line with regards to called/calling - so you need to find out exactly what the switch expect on both called and caller for outgoing to behave as you want. /Jan
On our PRI systems we are sending 10 digits (2071231234), and on the BRI system we are sending 11 digits (02071231234).