... confirm your network frequency before you place the order, in North America, Central America,Caribbean and South America ... 1900Mhz or Quadband 850/900/1800/1900Mhz; while in Europe,Asia,Africa,Oceania and Middle east, GSM ... Channel Space: 200KHz4.User line, bell signal :In line with GB/T152795.Max Power:0.25W/ ... be separated by ','-->if the carrier no response in 3 minutes, fwt will not forward sms to ...