工程师i,您好,我把模块设置了volte,用quetel CM 拨号,能同时上网, 能asterisk sip用quectelo 拨打外线。但是有个问题时一直没解决,那就是拨外线时,听不到对方电话振铃时嘟嘟的回声,一直是无声状态,对方接通后就能互相通话。但如果用默认设置的话,上网和打电话不能同时使用,拨外线时能听到对方电话电话振铃时嘟嘟的回声,但上网就中断了。这是什么原因?请解惑。万分感谢。
Quectel
EC20F
Revision: EC20CEFHLGR06A03M1G
+QMBNCFG: “List”,0,0,0,“Volte_OpenMkt-Commercial-CMCC”,0x05012011,201704141
+QMBNCFG: “List”,1,0,0,“OpenMkt-Commercial-CT”,0x0501131C,201704141
+QMBNCFG: “List”,2,1,1,“ROW_Generic_3GPP”,0x05010824,201712241
+QMBNCFG: “List”,3,0,0,“OpenMkt-Commercial-CU”,0x05011510,201708171
+QMBNCFG: “List”,4,0,0,“Reliance_OpnMkt”,0x05011B4B,201801051
ID Group State RSSI Mode Submode Provider Name Model Firmware IMEI IMSI Number
quectel0 0 Free 24 0 0 CHN-UNICOM EC20F EC20CEFHLGR06A03M