Polycom 3725-76302-001O Manual De Usuario

 

Call Server Configuration

Polycom, Inc. 

251

See also: 

A preliminary is an executable script, written in the Javascript language, that defines processing actions 
(filtering or transformation) to be applied to a dial string before the dial rule’s action is performed. 

A postliminary is an executable script, written in the Javascript language, that defines dial string 
transformations to be applied before querying an external device (gatekeeper, SIP peer, SBC, or MCU). 

Transformation scripts output some modification of the DIAL_STRING variable (which is initially set to the 
dial string being evaluated). 

Filtering scripts may pass the dial string on to the dial rule’s action (if the filter criteria aren’t met) or return 
one of the following: 

● NEXT_RULE: Skips the rule being processed and passes the dial string to the next rule. 
● BLOCK: Rejects the call. 

See 

 on page 255 for some examples. 

The following table describes the predefined variables you can use in a preliminary or postliminary script. 
The script can evaluate a variable or change its value (the change isn’t preserved after the script completes). 

Resolve to external address 

Determines if the dial string is a well-formed instance of an external address type to 
which the rule applies, and if so, uses the resolution procedures specified in the 
applicable standard for that address type. 
After selecting this action for a rule, select the address type or types to which the 
rule applies. The address types and applicable standards used to resolve them 
are: 
•

SIP URI: RFCs 3261 and 3263 

H.323 Email-ID: H.225.0 specification, Appendix IV 

H.323 url-ID: H.323 specification, Annex O 

Resolve to conference room 
ID 

Looks for a conference room (virtual meeting room, or VMR) that matches the dial 
string. 

Resolve to virtual entry 
queue 

Looks for a shared-number entry queue that matches the dial string. 

CALLER_E164 

For H.323 calls only, an array variable initially set to the set of E.164 
addresses of the caller. The length of the array is 0 if the caller doesn’t have 
an E.164 address.

CALLER_H323ID 

Array variable initially set to the set of H323ID addresses of the caller. The 
length of the array is 0 if the caller doesn’t have an H323ID address. 

CALLER_IS_IPV6

“TRUE” if the caller is an IPv6 endpoint. Blank otherwise.