Description

Difficulty getting a serial connection to work on an EIA-530 PIC when connected to a KG-194.

Solution

The EIA-530 Serial Physical Interface Card (PIC) provides a cost-effective solution for enterprise WANs and ISPs who need to establish connectivity between Juniper Networks M-series routers and network devices with EIA-530 interfaces. The PIC provides full interoperability with KG-194 and KIV-19 devices and compliance with EIA-530 specifications.

Following configuration under the Serial Interface Hierarchy is required to bring up the serial connection.

keepalives interval 10 up-count 1 down-count3;
encapsulation cisco-hdlc;
serial options {
    dte-options {
      ignore-all;
        dtr auto-synchronization duration 1000 interval 29;
    }
    clocking-mode loop;

For reference, the EIA RS-530 Interface Pin Specifications are listed below.

Pin   Pin
No.    Description:
1     Shield(A)
2     Transmitted Data(A)
3     Received Data (A)
4     Request to Send (A)
5     Clear to Send (A)
6     DCE Ready (A)
7     Signal Ground
8     Received line Signal Detector (A)
9     Receiver Signal Element Timing - DCE (B)
10    Received line Signal Detector (B)
11    Transmitter Signal Element Timing   DTE (B)
12    Transmitter Signal Element Timing   DCE (B)
13    Clear to Send (B)
14    Transmitted Data (B)
15    Transmitted Signal Element DCE (A)
16    Received Data (B)
17    Receiver Signal Element Timing DLE (A)
18    Local Loopback
19    Request to Send
20    DTE Ready (A)
21    Remote loopback
22    DCE Ready (B)
23    DTE Ready (B)
24    Transmitter Signal Element Timing DTE (A)
25    Test Mode

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