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tbd:intl [2009/04/29 20:12] janakj |
tbd:intl [2009/04/29 22:20] (current) janakj |
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| ====== Internalization of Reason Phrases ====== | ====== Internalization of Reason Phrases ====== | ||
| **Contact: | **Contact: | ||
| + | |||
| + | If you ever looked at any SIP reply, you probably noticed that the first line | ||
| + | of the reply contains a number code followed by a reason phrase. The purpose | ||
| + | of the reason phrase is to provide a human readable text, this is a fact | ||
| + | that is little known today, when most SIP user agents are hardware devices | ||
| + | which often resemble traditional phones with limited display capabilities. | ||
| + | |||
| + | The situation can be, however, different for software user agents, running | ||
| + | on user's computer. Such user agents have access to the screen and thus they | ||
| + | can provide the user with more information than traditional HW phones, for | ||
| + | example, with the text from the reason phrase. | ||
| + | |||
| + | So, when the sip-router server sends back " | ||
| + | while it is working hard on routing the user's request towards its destination, | ||
| + | wouldn' | ||
| + | nice people operating the server? We think so. And it would be even better if | ||
| + | such nice and informative messages were translated into the user's mother tongue, | ||
| + | so that he/she could enjoy them even more. | ||
| + | |||
| + | The goal of this work topic is to develop a sip-router module which can translate | ||
| + | reason phrases in replies passing through the server on the fly. The module shall | ||
| + | load a set of plain-text configuration files with text translations at server | ||
| + | startup and translate the text based on user's language preferences and the | ||
| + | contents of those configuration files. | ||
| + | |||
| + | The initial version of the translation module should only translate reason phrases | ||
| + | in replies that the server receives from other hosts, i.e. other servers or user | ||
| + | agents. The second version of the module shall also translate reason phrases in | ||
| + | locally generate SIP replies (this is slightly more difficult). | ||
| + | |||
| + | The format of language files is not yet decided. Here is one suggestion: | ||
| + | < | ||
| + | # Format: | ||
| + | # [Language] | ||
| + | # < | ||
| + | # | ||
| + | [en_US.ascii] | ||
| + | 100::Trying | ||
| + | 180:: | ||
| + | 181::Call Is Being Forwarded | ||
| + | 182::Queued | ||
| + | 183:: | ||
| + | 200::OK | ||
| + | 202:: | ||
| + | 300:: | ||
| + | |||
| + | [cs_CZ.iso-8859-2] | ||
| + | 100:: | ||
| + | 100: | ||
| + | 180:: | ||
| + | 181::Hovor byl presmerovan | ||
| + | 182::Jste v poradi | ||
| + | 183:: | ||
| + | 200:: | ||
| + | 202::Bude vyrizeno pozdeji | ||
| + | 300::Vice moznosti | ||
| + | </ | ||
| + | |||
| + | Translations are arranged into sections according to the language. Each line | ||
| + | contains three elements delimited by ':' | ||
| + | code. This reason code must match the reason code in the reply in order for | ||
| + | the line to take effect. | ||
| + | |||
| + | The second line is an optional regular expression. If the regular expression | ||
| + | is not empty then it will be matched against the incoming reason text and the | ||
| + | line will be applied if and only if both the reason code and the regular | ||
| + | expression match. | ||
| + | |||
| + | The third element is the new reason phrase text (in the destination language). | ||
