But now you can from your stationary telephone system to a mobile phone and you only need to pay the cheap internal network price charged by the mobile company. The connection is charged as a mobile to mobile call within the same network. This direct connection saves costs.

Comsat. mobile telephone adapters are separate GSM transmitter and receiver devices which are connected either to your existing digital telephone system at the SO outside line or subscriber port or in the case of an analogue system at the outside line or subscriber port. They are available either for the GSM or the GSM 1800 networks (in Germany known as the ‚D' and the ‚sE' networks, respectively). The device is switched on by inserting a SIM card of the network operator of your choice.

With the sets in the Comsat. ISDN Plus series, you can not only conduct voice calls, but you can also send data, fax messages or SMS short messages. Comsat. ISDN Plus can be connected up anywhere where no regular landline is available or where a stationary telephone connection would be uneconomical.

For the opposite direction, the system can be configured so that incoming mobile calls are routed cheaply via the adapter all the way to the desired extension. Just some of the benefits of the mobile phone adapter.

• Every call you make between your communications system and the mobile phone network will be charged at the cheap internal call price of your mobile network provider, whether for D or E networks, GSM 900 or GSM 1800
• All the technical features of your communications system can be used (e.g. least cost routing, storing frequently used numbers, recording call charges, etc.)
• Optimum voice transmission quality
• Simple and easy to programme
• The modern design of the Comsat. ISDN Plus means it can be desk or wall mounted
• Optimum reception quality even with poor network coverage by using the appropriate directional antenna

What are the advantages of co M .s.a.t. GSM gateways?

• Reducing fixed to mobile, mobile to fix communication costs between 50%-70% (average, depending on country SIM card tariffs)
• Free choice of SIM cards (from mobile carriers) and corresponding offers, e.g. inexpensive VPN tariffs
• Modular system for small/medium/big size business (Corporates, Call Center, ISP´s, fixed/cellular operators etc.)
• GSM gateways can be installed as Wireless Local Loop solution. The PABX, connected to a GSM gateway can operate without any fixed network line
• coM.s.a.t. GSM Gateway products available for ISDN BRI, ISDN PRI, and analogue lines.
• ISDN BRI solution offers direct fax over GSM networks

How does it work?

• Connected to an internal/external PABX port, GSM gateways function like a mobile/cellular phone, where SIM cards (3V) have to be inserted
• Calls from fixed to mobile networks will be directed from the PABX to the GSM gateway
• This way the PABX , connected to a GSM gateway, is able to establish a direct mobile to mobile call. Resulting that each call from the PABX to mobile networks can be routed via the selected SIM card (e.g. inexpensive VPN tariff), which is inside the GSM gateway

What are your benefits?

• Cost saving for calls to or from mobiles, LCR also for routing to fixed line
• Easy to use e-mail / SMS gateway: Send SMS from every mail program
• Versatile technical support (e-mail, telephone)
• Competitive prices, proven quality, good technical support and quick delivery
• Easy to install and maintain

coM.s.a.t. Multichannel PRA 2 PRI/64 GSM Gateway Technical Data:

Fixed Line Interface

• Protocol: 2 x E-DSS1 Primary Raid Interface (PRI, E1)
• Every layer (1-3) of both ports independently configurable (NT or TE mode)
• B-Channels: 30 or 60
• Clock: 2 Mbit/s, Master or Slave. Synchronization to PRI1, PRI2, or Sync Input
• Impedance: 120 or 75 Ohms

Synchronisation

• Synchronize clock to signal on PRI1 or PRI2
• Get clock from additional sync input
• Generate clock internally
• Also interfaces operating in NT mode can be configured as clock slave
  
  

Mobile Network Interface:

• Protocol: GSM Phase 2+
• Channels: up to 64 GSM channels in steps of 4
• Frequency: 900/1800/1900 MHz

Signalling:

• CALL-PROCEEDING, ALERTING (user free), CONNECT
• User selectable Progress Indicator to make in-band information audible
• Cause Translation Table for GSM and ISDN causes on DISCONNECT, RELEASE, or NO CARRIER
• User free CLIP and CLIR
• Programmable AOC Generation
  

Router Functionality:

• Routing to GSM or PSTN (PRI1/2)
• Fast routing: Typical delay < 200ms between SETUP from ISDN and dialing to GSM
• Number grouping by operator prefixes or routing hints
• Up to 3000 different routes possible
• Least cost routing by day/time
• Routing between the two PRI ports
• Maximum allowed time per route
• Billing information generation per route (AOC-D, AOC-E)
• The GSM channels can be fix-assigned to the B-channels to do routing from PBX/switch
  

Dial-In:

• Dialing modes: En-Block, Overlapped (INFO or DTMF)
• Two stage dialing from GSM/PSTN
• Authorization lists for dialing from GSM/PSTN to GSM/PSTN
• User recordable announcements for caller prompting
• Automatic forwarding of incoming calls at dial timeout to channel specific number

Maintenance:

• Windows® software PRAC for configuration/monitoring via RS-232, Ethernet, or GSM
• Reconfiguration during active calls for most parameters
• Status display, PRI: Operation mode, layer 1,2,3 status, signal status, sync status, number of outgoing/incoming calls active/in progress
• Status display, GSM: Group and Identification, GSM module status, diversion setting, 4-colour signal strength (RSSI) bar display, channel specific ASR, average call duration, total air time in percent, network, location (LAC), cell ID, IMSI, alarm status, GSM module ID/firmware
• Fault report by SMS

CDR (Call Statistics):

• Automatic download of CDR's and export in CSV format
• Start Time, Calling Number, Called Number, Whether the call is to be billed, Call Duration, Release Cause, Bearer Capability, From Channel, To Channel, Generated AOC's, Preferred Carrier (for Fallback Routing)
• Graphical analysis

SMS Functionality:

• Double use: Sending of SMS parallel to active calls
• High throughput: Up to 1000 SMS per hour

Three ways of sending SMS:

• directly Send/Receive SMS from configuration software
• as SMS-Server: Send /Receive SMS from any e-mail account, intelligent handling of SMS answers by leading them to the right e-mail address
• using third-party software: Modem emulation according to part of GSM 07.05

Special Features:

• Combining the traffic of 2 PRI to 64 GSM Channels can result in up to 30% more throughput (compared to 2 solutions with 1 PRI/32 GSM)
• Theoretical traffic volume limit as high as 2,000,000 minutes per month
• Only 2 antennas for 64 GSM channels needed

Approved for use by Dial Telecoms on

Philips ISDX PABX by Philips S A.

Gives clearest reception and fastest connection of calls to cell-phones and completely prevents line port lock-ups.