Multi-Tech Systems MultiVOIP GSM SIP-to-Cellular Gateways MVPGSM-2 Manuale Utente

Chapter 4: Configuring your MVPGSM 

Multi-Tech Systems, Inc. 

MVPGSM 

27 

Ethernet Parameters 

 

Packet Prioritization 
(802.1p) 

Y/N 

Select to activate prioritization under 802.1p protocol (described below).

Frame Type 

Type II, SNAP 

Must be set to match network’s frame type. Default is Type II. 

802.1p 

A draft standard of the IEEE about data traffic prioritization on Ethernet networks.  The 802.1p 
draft is an extension of the 802.1D bridging standard.  802.1D determines how prioritization 
will operate within a MAC-layer bridge for any kind of media.  The 802.1Q draft for virtual 
local-area-networks (VLANs) addresses the issue of prioritization for Ethernet networks in 
particular. 
802.1p enacts this Quality-of-Service feature using 3 bits. This 3-bit code allows data switches 
to reorder packets based on priority level.  The descriptors for the 8 priority levels are given 
below. 
802.1p PRIORITY LEVELS: 

  1 – Background:  Bulk transfers and other activities permitted on the network, but should not 

affect the use of network by other users and applications. 

  2 – Spare:  An unused (spare) value of the user priority. 
  0 – Best Effort (default):  Normal priority for ordinary LAN traffic. 
  3 – Excellent Effort:  The best effort type of service that an information services organization 

would deliver to its most important customers. 

  4 – Controlled Load:  Important business applications subject to some form of “Admission 

Control”, such as preplanning of Network requirement, characterized by bandwidth 
reservation per flow. 

  5 – Video:  Traffic characterized by delay < 100 ms. 
  6 – Voice:  Traffic characterized by delay < 10 ms. 
  7 - Network Control:  Traffic urgently needed to maintain and support network 

infrastructure. 

HIGHEST PRIORITY 

Call Control Priority 

0-7 

Sets the priority for signaling packets. 0 is lowest priority. 

VOIP Media Priority 

0-7 

Sets the priority for media packets. 0 is lowest priority. 

Others (Priorities) 

0-7, where 0 is 
lowest priority 

Sets the priority for SMTP, DNS, DHCP, and other packet types. 0 is lowest 
priority. 

VLAN ID 

1 - 4094 

The 802.1Q IEEE standard allows virtual LANs to be defined within a 
network. This field identifies each virtual LAN by number. 

IP Parameter fields 

 

Gateway Name 

alphanumeric 

Descriptor of current VOIP unit to distinguish it from other units in system.

Enable DHCP 

Y/N 
disabled by 
default 

Dynamic Host Configuration Protocol is a method for assigning IP address 
and other IP parameters to computers on the IP network in a single message 
with great flexibility.  IP addresses can be static or temporary depending on 
the needs of the computer. 

IP Address 

The unique IP address assigned to the MultiVOIP GSM. Default is 
192.168.3.143 

IP Mask 

n.n.n.n 

Subnetwork address that allows for sharing of IP addresses within a LAN.

Gateway 

n.n.n.n 

The IP address of the device that connects your MultiVOIP GSM to the 
Internet.