It is the appropriate installation and operation of cell phone jammers

 It is the appropriate installation and operation of cell phone jammers .
Exactly the same virtual switch users and ordinary users on the hardware interface. The virtual switch users to a machine, the length of numbers coexist, allocation of cornet free calls. The number of user groups in the virtual switch of up to 65535, the number of users for each user group by the capacity constraints of the switch, not subject to other restrictions. Virtual switch users to enjoy all the basic international requirements of the local subscriber service performance, special service and new business functions, and also has a hook flash transfer, call pickup and other small users to switch all the new business function. Ordinary users the PBX trunk limit the number of incoming  outgoing poor, the virtual switch is no such distress can be transferred directly to directly set aside. If the inappropriate use and operation of  cell phone jammers  are caused by the customer.
Digital trunk 30B + D and DID access the program. Access to China Telecom a digital relay (30B + D), a digital relay equivalent to 30 analog trunks, with 30 voice channels, to meet the 30 part of the machine while the incoming or outgoing. Users to choose the digital trunk access is one of the most advanced voice access to the bureau-side equipment DID data, the user switches to do DID data can direct inbound, outbound. Breath, dial an outside line without dialing "9", you can directly dial an outside line; when the incoming outside calls can either call the trunk pilot number, by Switchboard transfer, direct dial 8 numbers; intercom call after 4 trumpet. The customer needs to pay some attention to the installation and operation of  cell phone jammers .
Configure a PBX attendant, you can play the voice tone. The user can configure the digital phones and analog phones, digital phone has a feature will be very powerful, such as voice, conference call, a key transfer, caller ID, call waiting, etc. This way you can achieve an 8-bit number and a four trumpet per person. The same time, internal telephone management, directly by the administrator to operate on the switch, including long-distance telephone permissions, the user password to query real-time, historical phone list. Telephone (landline + mobile) overall solution. Mobile telephony convergence fixed-line access program - switchboard service. In 2008, China Telecom acquired China Unicom's CDMA network assets. So it is not cost effective for the customer to get  cell phone jammers .Predefined group call group can also be joined as a temporary group call; can set the name of the group call group and broadcast call to each participant. Group information is stored in the terminal. Chat Room: The special predefined group call participants need to select the chat room and join in order to participate. Chat rooms and chat room members must be predefined by the administrator and management information is stored in the operator's server. Chat rooms, once established, even if the room is no user chat room will not turn off until the chat room is idle longer than the system set the maximum time limit (usually 3600 seconds), the system will automatically shut down the chat room. Prompted the sexual call: one user to another user to send predefined text messages. I'm here to talk about my views, not official explanation, do not understand learn about, understand Bypass, if error, please correct me. After the first time buy or restore the official firmware, the iPhone will be in the state, which only make emergency calls can not use the other functions. The manufacturer can provide cell phone jammers of the good quality and high performance.