SNMP long string custom XML

[kopciu]

Operating System: Windows server 2012
Webserver: IIS
Cacti: 1.1.28
MySQL: 5.7
PHP: 7.0.25
RRDTool (Cygwin or Win32 build): win

Hello
I have problem with creating custom XML Data Query. In this case my snmp request look like this :
SNMPv2-SMI::enterprises.2026.1.1.0.7 = STRING: "TG=7,Peer=SIP,name=Outgoing_xx.xxx.xx.xxx__7,incalls=0/50[50],outcalls=0/50[50]"


I want to make calls graph. Can anyone help me with filtering long strings with commas becouse i have couple of requests like this so i would like to learn the method to filter this. In most cases i want to get one numeric value from string. Is it possible ?