We are a professional GSM/CDMA device manufacturer in China. I would introduce my 8 port GSM/CDMA SIM bank as below features:

8 voice channels are individually working with brand new industrial GSM/CDMA module,
Provide 8 FXS port,easily setup for call termination and origination with FXO gateway;
1 U rack size, slim and light, less shipment charge and easy carry;
Simple installation – easy configuration via ordinary phone DTMF input;
FAS for accurate billing with Line disconnect supervision and accurate battery reversal (anti-polarity) signal;
LEDs with power,network signal,Hook,battery reversal display, easily monitor call process;
GSM bands: 900/1800/1900 or 850/1800/1900 MHz, CDMA 450,800,1900 MHz;
High gain external antenna with 3m cable for optimal signal strength;
Quick call set up and release/Echo cancellation for less PDD;
CallerID restriction based on network default config or manual prefix config;
Individual channel power supply for easy SIM card replacement;
Provide falsed ringback tone for better ASR (Required by client individually);
GSM IMEI/CDMA ESN code changable (optional);
4 SIM per channel, auto cycling under 4 modes: realtime, call accumulated times, call accumulated minutes,working total times (optional for call termination);
Follow me with dial through features, it makes internal call transfer, make one number access instead of 8 number access, (optional for call origination);
Work as mobile neetwork gateway as GSM-GSM,GSM-CDMA,CDMA-GSM and CDMA-CDMA for cross network call cost saving;
Registration port locking and switch to neighbour base station 2 hours periodically;
Call repeated automatically for network congestion and make call going through (optional);
Callback supported without ANI and PIN code input,destination number dial straight (optional);
Yagi antenna provided up to 12 dB gain for weak signal and remote regions (optional).

16 ports GSM 900/1800/1900 MHz single SIM channel bank, GSM support callback without ANI and password input FWT, GSM Signal repeater, 4 in 1, 8 in 1 antenna combiner, callshop billing meter,support upto 30 KM long range WIFI transmission solution also available.

For details, please chat on MSN:jerryshawsz@msn.com or email info@jscomtech.com for product introductions.

I am looking forward to hearing from your response.

Thanks.

Jerry