For all SIP calls, sufficient bandwidth through the firewall is reserved as required by the audio codec being used (provided sufficient bandwidth is available). Here you can set how remaining data packets should be handled that are not part of SIP data streams in order to manage the firewall.
SNMP ID: 2.33.2.5
Telnet path: /Setup/Voice-Call-Manager/General
Possible Telnet values:
- PMTU: The subscribers of the data connection are informed that they should only send data packets up to a certain length (Path Maximum Transmission Unit, PMTU).
- Fragmentation: The VoIP router reduces the data packets by fragmenting them to the required length.
- NONE: The length of the data packets is not changed by the VoIP operation.
- PMTU + Fragmentation
Default: NONE/PMTU reduction