Installed five extra phones at a clients office.
The phones are just accepting incoming call (no ring) on EXT1, inspite they all seems to be registered at first glance.
Somebody has an idea where to look ? Thanks.
Dan, you did your best. In some circumstances, it's not enough. I have to do more tests. (standalone etc ...) If there is more info, you will get feedback.
Shall give a complete overview of the equipment, maybe you see it more clearly.
A GIGASet DX800A central phone with 6 registered sip's working fine. 192.168.0.10
A GIGASet NP510 PRO phone (DECT) with 6 registered sip's working fine too. 192.168.0.19
...
Okay, sounds reasonable. But there are still two other phones with six sip's handling them all, as it should. There is no setup in that phone for every line as 5060 5061 5062 5063 ... , only 5060 for every line ... Automatic encreased ?