IAD
Huawei HLR9820 V900R006 Product Description
GBSS9.0 DBS3900 Product Description V2.1(20110228)
2-GGSN9811 V900R007 Product Description
GBSS13.0 BSC6900 Product Description V1.0(20100730)
GSM Abis Dimensioning(2010324)