User Manual
Xiamen Four-Faith Communication Technology Co.,Ltd.
Page 25 of 48
Add
：
J1-J3,3
rd
Floor,No.44,GuanRiRoad,SoftWare Park,XiaMen .361008.China
http
：
//www.fourfaith.com Tel
：
+86 592-6300326 6300325 6300324 Fax
：
+86 592-5912735
IP MODEM will send the serial data to the center when two bytes transmit time interval larger
than this item value.
AT Command:
AT+BYTEINT=xxx
xxx: bytes interval time value
（
millisecond
）
◆
Custom Register String
This item is only valid when the WorkMode is TCST. It’s the self defined register string. It can
be empty, the maximum length is 70 bytes.
AT Command:
AT+CONNRGST=xxx
xxx
：
self defined register string
◆
Custom Heartbeat String
This item is only valid when the WorkMode is TCST. It’s the self defined heartbeat string, It can
be empty, the maximum length is 70 bytes.
AT Command:
AT+LINKRGST=xxx
xxx
：
self defined heartbeat string
Connect Retry Times, Reconnect Time Interval
In normal applications, IP MODEM will always try to connect with the center even if the center
has problems or closed. To reduce these unnecessary wireless data flow, you can configure the
“Connect Retry Times” and “Reconnect Time Interval” items. When IP MODEM fail to connect
