SPD-703-1 -- CODIRECTIONAL RATE AND INTERFACE CONVERTER
GarrettCom, Inc.Codirectional Rate and Interface ConverterSPD-703-1
Description
FEATURES
SPD-703-1, an Advanced Rate and Interface Converter, converts between the ITU G.703 codirectional (64 kbps) interface and several standard data communication interfaces.
SPD-703-1 performs two types of conversion:
Interface conversion: from G.703 to V.24, V.35, V.36, X.21, RS-530 or Ethernet;
Rate conversion: from 56 or 48 to 64 kbps. This enables connecting of a variety of DTE equipment to G.703 transmission equipment.
Operating full duplex at a data rate of 64 kbps, SPD-703-1 has a range of up to 800m (0.5 mile) from the G.703 equipment.
The converter's receive timing is the recovered clock from the G.703 signal. The transmit timing source is strap-selectable for either:
Recovered clock from the G.703 receive signal;
Internal timing. Two internal 16-bit elastic buffers accommodate for the difference in clocking phase.
SPD-703-1 acts as a rate adapter for connecting 48 or 56 kbps DTE equipment to a 64 kbps G.703 line. At 56 or 48 kbps, one control signal may be transferred end-to-end. Alternately, the available bandwidth can be used for a 1200 bps async secondary subchannel for connecting additional DTE equipment over the same link.
SPD-703-1 features ITU V.54 diagnostics, enabling local analog loopback and local and remote digital loopback tests. The loops are manually activated either by front panel switches or from the DTE interface (except for X.21).In addition to the loops, a front panel PATT switch generates a pseudo-random test pattern (511 bits), according to the ITU V.52 standard for testing end-to-end error free connectivity.
SPD-703-1 is available either as a standalone unit, or as a card for the ASM-MN-214 19" modem rack.
Special hardware for mounting the standalone unit in a 19" rack can be ordered separately. This hardware enables the installation of either one unit or two units side-by-side.
Data Connect Enterprise, Inc.
Done
Description
FEATURES
SPD-703-1, an Advanced Rate and Interface Converter, converts between the ITU G.703 codirectional (64 kbps) interface and several standard data communication interfaces.
SPD-703-1 performs two types of conversion:
Interface conversion: from G.703 to V.24, V.35, V.36, X.21, RS-530 or Ethernet;
Rate conversion: from 56 or 48 to 64 kbps. This enables connecting of a variety of DTE equipment to G.703 transmission equipment.
Operating full duplex at a data rate of 64 kbps, SPD-703-1 has a range of up to 800m (0.5 mile) from the G.703 equipment.
The converter's receive timing is the recovered clock from the G.703 signal. The transmit timing source is strap-selectable for either:
Recovered clock from the G.703 receive signal;
Internal timing. Two internal 16-bit elastic buffers accommodate for the difference in clocking phase.
SPD-703-1 acts as a rate adapter for connecting 48 or 56 kbps DTE equipment to a 64 kbps G.703 line. At 56 or 48 kbps, one control signal may be transferred end-to-end. Alternately, the available bandwidth can be used for a 1200 bps async secondary subchannel for connecting additional DTE equipment over the same link.
SPD-703-1 features ITU V.54 diagnostics, enabling local analog loopback and local and remote digital loopback tests. The loops are manually activated either by front panel switches or from the DTE interface (except for X.21).In addition to the loops, a front panel PATT switch generates a pseudo-random test pattern (511 bits), according to the ITU V.52 standard for testing end-to-end error free connectivity.
SPD-703-1 is available either as a standalone unit, or as a card for the ASM-MN-214 19" modem rack.
Special hardware for mounting the standalone unit in a 19" rack can be ordered separately. This hardware enables the installation of either one unit or two units side-by-side.
Codirectional Rate and Interface Converter
SPD-703-1
Codirectional Rate and Interface Converter
SPD-703-1
FEATURES
SPD-703-1, an Advanced Rate and Interface Converter, converts between the ITU G.703 codirectional (64 kbps) interface and several standard data communication interfaces.
SPD-703-1 performs two types of conversion:
Interface conversion: from G.703 to V.24, V.35, V.36, X.21, RS-530 or Ethernet;
Rate conversion: from 56 or 48 to 64 kbps. This enables connecting of a variety of DTE equipment to G.703 transmission equipment.
Operating full duplex at a data rate of 64 kbps, SPD-703-1 has a range of up to 800m (0.5 mile) from the G.703 equipment.
The converter's receive timing is the recovered clock from the G.703 signal. The transmit timing source is strap-selectable for either:
Recovered clock from the G.703 receive signal;
Internal timing. Two internal 16-bit elastic buffers accommodate for the difference in clocking phase.
SPD-703-1 acts as a rate adapter for connecting 48 or 56 kbps DTE equipment to a 64 kbps G.703 line. At 56 or 48 kbps, one control signal may be transferred end-to-end. Alternately, the available bandwidth can be used for a 1200 bps async secondary subchannel for connecting additional DTE equipment over the same link.
SPD-703-1 features ITU V.54 diagnostics, enabling local analog loopback and local and remote digital loopback tests. The loops are manually activated either by front panel switches or from the DTE interface (except for X.21).In addition to the loops, a front panel PATT switch generates a pseudo-random test pattern (511 bits), according to the ITU V.52 standard for testing end-to-end error free connectivity.
SPD-703-1 is available either as a standalone unit, or as a card for the ASM-MN-214 19" modem rack.
Special hardware for mounting the standalone unit in a 19" rack can be ordered separately. This hardware enables the installation of either one unit or two units side-by-side.
FEATURES
SPD-703-1, an Advanced Rate and Interface Converter, converts between the ITU G.703 codirectional (64 kbps) interface and several standard data communication interfaces.
SPD-703-1 performs two types of conversion:
Interface conversion: from G.703 to V.24, V.35, V.36, X.21, RS-530 or Ethernet;
Rate conversion: from 56 or 48 to 64 kbps.
This enables connecting of a variety of DTE equipment to G.703 transmission equipment.
Operating full duplex at a data rate of 64 kbps, SPD-703-1 has a range of up to 800m (0.5 mile) from the G.703 equipment.
The converter's receive timing is the recovered clock from the G.703 signal. The transmit timing source is strap-selectable for either:
Recovered clock from the G.703 receive signal;
Internal timing.
Two internal 16-bit elastic buffers accommodate for the difference in clocking phase.
SPD-703-1 acts as a rate adapter for connecting 48 or 56 kbps DTE equipment to a 64 kbps G.703 line. At 56 or 48 kbps, one control signal may be transferred end-to-end. Alternately, the available bandwidth can be used for a 1200 bps async secondary subchannel for connecting additional DTE equipment over the same link.
SPD-703-1 features ITU V.54 diagnostics, enabling local analog loopback and local and remote digital loopback tests. The loops are manually activated either by front panel switches or from the DTE interface (except for X.21).In addition to the loops, a front panel PATT switch generates a pseudo-random test pattern (511 bits), according to the ITU V.52 standard for testing end-to-end error free connectivity.
SPD-703-1 is available either as a standalone unit, or as a card for the ASM-MN-214 19" modem rack.
Special hardware for mounting the standalone unit in a 19" rack can be ordered separately. This hardware enables the installation of either one unit or two units side-by-side.
