It was not easy to have a numbered telephone in Dorne, as such technology was still very advanced here and not widely available.
Winterless Port had such a setup, imported from the Great Tang Empire, or rather, smuggled from the Great Tang Empire.
Smuggling this system took quite a bit of effort, but it was worth it. It opened the door for the continued development of communication technology in the Dorne Empire and also facilitated Mr. Pan Yiping's communications.
With this telephone system as a reference, Dorne began to massively replicate the fixed telephone technology of Tang Country to replace the original outdated telephone switching equipment.
For this, Dorne the First even commended Pan Yiping, awarding him a medal and granting him the title of Baron of Dorne.
Of course, Pan Yiping didn't care about such a title, because the Dorne figures he associated with were all nobility like Earls and Marquises.