Since China Telecom, China Unicom, China GBnet have developed their commercial test of IP phone, many people begin to interest in IP phone.

中国电信、中国联通、中国吉通三家公司获准开展IP电话商用实验以来，IP电话成了业内外人士关注的热点。

youdao

Since China Telecom, China Unicorn, China GBnet have developed their commercial test of IP phone, many people begin to interest in IP phone.

中国电信、中国联通、中国吉通三家公司获准开展IP电话商用实验以来，IP电话成了业内外人士关注的热点。

youdao

Since China Telecom, China Unicorn, China GBnet have developed their commercial test of IP phone, many people begin to interest in IP phone.

中国电信、中国联通、中国吉通三家公司获准开展IP电话商用实验以来，IP电话成了业内外人士关注的热点。

youdao