I actually have one for loan. It says following, which obviously means that not phonecalls are not supported.
There is an interesting link related to voicemail hacking, though.
http://www.ruchirablog.com/activating-voice-calling-on-huawei-hspa-modems/ 2010-09-08 18:16:46,7, huawei: ## Start of device details
2010-09-08 18:16:46,7, huawei: # Manufacturer identification:
2010-09-08 18:16:46,7, huawei: -> AT+CGMI
2010-09-08 18:16:47,7, huawei: <- huawei
OK
2010-09-08 18:16:47,7, huawei: # Model identification:
2010-09-08 18:16:47,7, huawei: -> AT+CGMM
2010-09-08 18:16:47,7, huawei: <- E160X
OK
2010-09-08 18:16:47,7, huawei: # Revision identification:
2010-09-08 18:16:47,7, huawei: -> AT+CGMR
2010-09-08 18:16:48,7, huawei: <- 11.609.10.00.00
OK
2010-09-08 18:16:48,7, huawei: # New message indications, list of supported modes:
2010-09-08 18:16:48,7, huawei: -> AT+CNMI=?
2010-09-08 18:16:48,7, huawei: <- +CNMI: (0,1,2),(0,1,2,3),(0,2),(0,1,2),(0,1)
OK
2010-09-08 18:16:48,7, huawei: # New message indications, current settings:
2010-09-08 18:16:48,7, huawei: -> AT+CNMI?
2010-09-08 18:16:49,7, huawei: <- +CNMI: 0,0,0,0,0
OK
2010-09-08 18:16:49,7, huawei: # Preferred message storage, list of supported mem's:
2010-09-08 18:16:49,7, huawei: -> AT+CPMS=?
2010-09-08 18:16:49,7, huawei: <- +CPMS: ("ME","MT","SM","SR"),("ME","MT","SM","SR"),("ME","MT","SM","SR")
OK
2010-09-08 18:16:49,7, huawei: # Phonebook storage, available mem's:
2010-09-08 18:16:49,7, huawei: -> AT+CPBS=?
2010-09-08 18:16:50,7, huawei: <- +CME ERROR: 14 (SIM busy)
2010-09-08 18:16:50,7, huawei: # List messages, list of supported stat's:
2010-09-08 18:16:50,7, huawei: -> AT+CMGL=?
2010-09-08 18:16:50,7, huawei: <- +CMGL: (0-4)
OK
2010-09-08 18:16:50,7, huawei: # Delete message, list of supported values:
2010-09-08 18:16:50,7, huawei: -> AT+CMGD=?
2010-09-08 18:16:51,7, huawei: <- +CMGD: (0,1,2,3),(0-4)
OK
2010-09-08 18:16:51,7, huawei: # Phone activity status, list of supported stat's:
2010-09-08 18:16:51,7, huawei: -> AT+CPAS=?
2010-09-08 18:16:51,7, huawei: <- +CPAS: (0,3,4)
OK
2010-09-08 18:16:51,7, huawei: # TE character set, list of supported charset's:
2010-09-08 18:16:51,7, huawei: -> AT+CSCS=?
2010-09-08 18:16:52,7, huawei: <- +CSCS: ("IRA","GSM","UCS2")
OK
2010-09-08 18:16:52,7, huawei: # TE character set, current setting:
2010-09-08 18:16:52,7, huawei: -> AT+CSCS?
2010-09-08 18:16:52,7, huawei: <- +CSCS: "IRA"