Esme address range Option

 The ESME address rangeto present when binding as a receiver in response to an outbind request. By default, an empty string is used. For some SMSCs, an address range of &#x5b;:alnum:&#x5d;&#x2a; may be appropriate. Any string specified must not exceed a length of 40 bytes.

The default value is the empty string.

See also:
 * SMS smpp_server options