USSD消息中的最大字符数是多少? [英] What is the maximum number of characters in an USSD message?

问题描述

我了解到USSD消息包含160个字节.对于7位数据编码方案，最大字符数为160 * 8/7，即182个字符.我不清楚UCS2编码的最大字符数是多少.通常情况下，大约是160/2，但是我对此有一些混杂的信息.

I've understood that an USSD message consists of 160 bytes. For 7 bit data coding schemes, the maximum number of characters is 160*8/7 which gives 182 characters. It's unclear to me what is the maximum number of characters for UCS2 encoding. Normally, it would be something like 160/2, but I have some mixed information on this.

推荐答案

USSD消息的最大大小为160个字节.对于GSM 7位消息，您可以正确地说出限制为182个字符.每个定义的UC2编码固定为每个字符2个字节，因此您最多可以包含80个字符.

The maximum size of a USSD message is 160 bytes. For GSM 7 Bit messages you are correct in saying the limit is 182 characters. UC2 encoding per definition is fixed 2 bytes per character so you will have a maximum of 80 characters.

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