The ES2704D Access Units are single port access units for Unframed E1 or Fractional E1 services. Data Port rates are selectable via DIP-switches, for any multiple of 64Kbps up to 2048kbps. User data is placed into the E1 frame, using only the required number of timeslots. Timeslot assignment is accomplished according to the Data Port speed and may be randomly selected by DIP-switches. The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is RS-530 standard. Adapter cables are available for V.35, X.21 and RS-449. The G.703 FE1 DIP and slide switches, located on the side and front panels, provide for easy setup and control of all functions.

The ES2704 Access Units are single port access units for Unframed E1 or Fractional E1 services. Data Port rates are selectable via DIP-switches, for any multiple of 64Kbps up to 2048kbps. User data is placed into the E1 frame, using only the required number of timeslots. Timeslot assignment is accomplished according to the Data Port speed and may be randomly selected by DIP-switches. The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is RS-530 standard. Adapter cables are available for V.35, X.21 and RS-449. The G.703 FE1 DIP and slide switches, located on the side and front panels, provide for easy setup and control of all functions.

The ES460 is a miniature G.703 balun that allows 75 ohm coax hardware to communicate with 120 ohm twisted pair equipment. The RM460 TeleMatch G.703 rack mount balun panel lets you match the connectors, impedance and signal characteristics of up to 16 dual coax BNC connections (75 ohm) with up to 16 twisted pair connections (120 ohm). Operating in compliance with the CCITT G.703 specification, the Model RM460 occupies only 2U (3.5"/8.9 cm) of vertical rack space in a 19" (48.3 cm) rack-allowing for efficient multiport matching.
The Model ES460/RM460 specifically addresses the ONP requirement that European PTTs offer 120 ohm twisted pair terminations to their customers. Some PTTs and private carriers are standardized on 75 ohm coax, or have customers whose CPE has only 75 ohm coax connections. The Model ES460/RM460 presents a ready solution to this termination mismatch. Supporting E1 data rates to 2.048 Mbps, the Model ES460/RM460 receives 75 ohm signals and converts them to 120 ohm for transmission over a network or reception by a CPE. The signals output by the Model ES460/RM460 are scaled to match the pulse shape requirements specified by the CCITT G.703 standard. The Model ES460/RM460 can perform 120 ohm to 75 ohm signal conversion as well, giving the device a dual role.

The ES2703 Access Unit are single port access units for Unframed E1 services. The Data Port rate is fixed at 2048kbps (Unframed E1 only). User data is transparently transmitted on the E1. The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is RS-530 standard on a DB25F connector. Adapter cables are available for V.35, X.21 and RS-449. The G.703 port provides for either 75 Ohm unbalanced connection via BNC connectors or 120 Ohm balanced connection via RJ-45. The ES2703 DIP switches, located under the unit, provide for easy setup and control of all functions.

The Tiny703 Access Unit are single port access units for Unframed E1 services. The Data Port rate is fixed at 2048kbps (Unframed E1 only). User data is transparently transmitted on the E1. The main E1 link may be clocked from the recovered receive clock (LBT), from the data port, or from an internal oscillator. The data channel interface is RS-530 standard on a DB25F connector. Adapter cables are available for V.35, X.21 and RS-449. The G.703 port provides for either 75 Ohm unbalanced connection via BNC connectors or 120 Ohm balanced connection via RJ-45. The Tiny703DIP switches, located under the unit, provide for easy setup and control of all functions.