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GSM接入台

本帖最後由 Qnewbie 於 2010-8-10 19:58 編輯

Have someone in the forum bought so called GSM接入台?
http://item.taobao.com/item.htm?id=305022973

It sounds great as access number or callback DID number. It is unclear, though, that the connection between GSM 接入台 and asterisk.
It has only RJ11 port, which should be connected to FXS or FXO port(Linksys ATA?).

角色C-hing, have you more info for this kind of products?

TOP

如果member不用中国电信的电话又怎样办呢?

角色

TOP

整个E9套餐就唔洗买GSM转接平台了吧   我的手机去边都可以联到asterisk   任何来电  也可以转到手机或pstn

TOP

我慢慢觉得这个GSM接入平台有一定用途,在大陆你可以买一张月租卡(10元一个月的)只接听,不打,那么你可以告诉你的朋友拨打这个手机号,那么无论你身处其他人都能找到你,特别是你在香港。大陆的朋友拨打大陆的电话号码,你在香港都能接到他们的电话。当然要实行这个的模式,你需要的东西如下:

1)Asterisk server
2)TDM400P Analogue card with FXO port
3)GSM接入平台 FXS输出(就是可以接电话机)


角色

TOP

I think one reason for GOIP sensitive to the signal strength is that GOIP's DSP coprocessor is not good for codec task or poor programmed. In the GSM FXO + SPA3102, each one follows its own timing specification and the total delay has good margin.

TOP

按照道理,应该GOIP应该比 GSM FXO + SPA3102快。是否问题存在强于弱的问题呢?因为我知道,GSM FXO好像的接受力比GOIP强,不知道是否是这个原因导致它们之间的分别呢?

角色

TOP

GSM 的天线便 可以,要SMA头。从GSM小天线(¥20)到防水平板(¥70)到玻璃天线(¥120)都可以。

我想知道GSM接入平台 到 FXS 的delay 如何? 现在是delay 是 GSM FXO + SPA3102  小于 GOIP。 我猜GSM FXS 更好? 有没有意见?

TOP

本帖最後由 Qnewbie 於 2010-8-9 17:58 編輯

I think the antenna is a must.

I did not get the specification of antenna interface, should buy one antenna latter.

TOP

Same result as obtained from another member. If the signal is strong enough, the performance of GOIP is alright. Is there any menas to increase the sentitivity of antenna?

YH

TOP

It is a bit hacky due to low signal level(14), otherwise it is acceptable.

TOP

Have you got the GOIP? How is the performance of it?

YH

TOP

With support from DBL, the GOIP works as I wanted.

Mobile 1 => GOIP(mobile 2) => VSP(ET263) => Mainland

The support from DBL was great. It changes my view to the service level for mainland manufactures. It might worth to try mainland products next time.

TOP

Try to set up GOIP for call divert:

Mobile 1 => GOIP(mobile 2) => VSP(ET263) => Mainland

Scenario is user uses Mobile 1 to call GOIP(mobile 2&ET263 registered), after password(or whitelist) verification,  user dials a number like 0755123456 to call phone at China. It seems that this solution is not feasible for second dial. Invention of Asterisk is necessary.

TOP

Almost all GSM boxes come from the same company. I think it differs not so much from each other.

TOP

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