url ::== "cbs://" address_part
address_part ::== message_identifier_part
message_identifier_part ::== ":" digits
digits ::== DIGIT | DIGIT digits
例子:
"cbs://:5009"
"cbs://:1089"
JSR 205 Wireless Messaging API (WMA), version 2.0
查询方式: System.getProperty( "wireless.messaging.mms.mmsc" ) != null
接口: javax.wireless.messaging.MessageConnection ，扩展了Connection
BNF:
url ::== "mms://" address_part
address_part ::== (e-mail-address | device-address | shortcode-address
