Whenever a VF is used to complete a call (either by dial access or through ARS), call processing treats the number as a physical facility for Station Message Detail Recording (SMDR) purposes. Thus, if VF code #190 is used to complete a call, the SMDR call record will show “#190” as the facility used.
A VFN may contain up to 28 characters. The pound sign (#) is used as an escape character within the digit string and indicates that the character following the pound sign requires special interpretation. The following table defines the special characters that may be included in a VFN.
C H A R A C T E RF U N C T I O N
*
#*
##
#3
1.5second pause Transmit * Transmit #
Begin | t r a n s m i s s i o n | o f | |||
Signaling | (system | begins | transmitting | ||
signals to | the | far | end switch). | ||
#5Insert dialed digits (destination telephone number) here. The destination telephone number may be up to 16 digits in length ( 2 1 i f A R S d i g i t t r a n s l a t i o n s h a v e occurred).
If #5 is used, it must be placed within the last nine digits of the VFN. If #5 is n o t used within a VFN, the dialed digits are appended to the end of the VFN.
Examples of Virtual Facility Numbers
The use of VFS can be demonstrated with the following examples:
●Example 1: VF Code = #191, VFN = 100 10288
— The first three digits (100) represent the FAC for a CO trunk group.
—10288 represents an access code for a
—The destination telephone number (dialed by the user) will be transmitted
after this IXC access code, since “#5” was not used within the VF number.
● Example 2: VF Code = #193, VFN = 2219* 5554343 *#5#*12345
—The first three digits (221) represent the FAC for a tie trunk to a remote PBX.
— The “9” is used to access the remote PBX’s ARS.
. The “*” represents a pause of 1.5 seconds (allows time for dial tone to occur).
—The “555 4343” defines the local address of a private network and its internal routing table.
—The “*” represents a 1.5 second pause.
