TOPEX multiACCESS
GSM Gateway

multi-Access E1/30 GSM
gateway with two extra
backup channels. New SS7
protocol implemented (SS7
with national SUP, ITU
variant).

Connectivity/switching solution
with two E1 digital trunks –
VoIP gateway connectivity via
E1 digital trunk and PBX direct
access through E1 trunk to the
GSM network.

multi-ACCESS VOICE GATEWAY AND SWITCHING SOLUTION
TOPEX multi-Access is a family of versatile equipment for voice and data communications.

Its modular architecture allows configuration into a diverse range, depending upon the requirements of the clients. The proprietary 19in cabinet rack (6U high and 30cm deep) accepts different types of plug-in boards:

• E1 (one or two E1 trunks)
• GSM cards with two ports each, four SIM per GSM module
• PBX cards with eight junctions each
• E&M cards with four junctions each
• Subscriber boards with eight junctions
• Boards for BL phones, etc.

multi-Access may be used either as an interface between an E1 trunk and up to 32 analog phone channels (which may be wireless connections, PBX junctions, subscriber junctions or E&M junctions, etc. in different combinations) or as an interface between two or four E1 trunks to achieve conversion of signaling protocols. For instance, multi-Access may connect one or two E1 trunks with R2 signaling to other one or two E1 trunks with ISDN signaling.

Thus, TOPEX multiACCESS is not only a voice gateway but also a highly flexible switching solution.

NEW MultiACCESS WITH TWO E1 TRUNKS
This new variant of Topex equipment allows usage of two E1 trunks with a new range of applications, such as E1 multiplexers, single and multi-span E1 interfacing, PBX and Channel Banks, HDSL transport, Computer Telephony, signaling conversion, etc.

The MultiACCESS unit acts as a multiprotocol signaling converter. Its main function is conversion between two different signaling systems. Also it can be used to interface two networks with non-standard protocols.