ESR series service routers.ESR-Series. User manual
Step Description Command Keys
15 Set USB modem identifier allocated by 
the system (specified in item 2).
esr(config-cellular-modem)# 
device <WORD>
<WORD> – identifier of 
connected modem’s USB port, 
set in the range of [1..12].
16 Set the previously established 
parameter profile to the USB modem.
esr(config-cellular-modem)# 
profile <ID>
<ID> – identifier of USB modem 
parameter profile, set in the 
range of [1..10].
17 Set SIM card unlock code (if 
necessary).
esr(config-cellular-modem)# pin 
<WORD>
<WORD> – SIM card unblock 
code [4..8]. Only digits are 
allowed.
18 Allow the use of any USB modem 
operation mode (optional).
esr(config-cellular-modem)# 
allowed-mode <MODE>
<MODE> – acceptable USB 
modem operation mode [2g, 
3g, 4g].
By default: all modes supported 
by the modem are allowed.
19 Set the size of the largest received 
packet (optional).
esr(config-cellular-modem)# mru 
{ <MRU> }
<MRU> – MRU value, takes 
values in the range of 
[128..16383].
Default value: 1500.
20 Change the maximum size of 
processed MTU 
(MaximumTransmissionUnit) packets.
MTU above 1500 will be active only 
when using the «system jumbo-frames» 
command (optional).
esr(config-cellular-modem)# mtu 
<MTU>
<MTU> – MTU value in bytes.
Default value: 1500.
21 Set the preferable USB modem 
operation mode in the mobile network 
(optional).
esr(config-cellular-modem)# 
preferred-mode { <MODE> }
<MODE> – preferable USB 
modem operation mode [2g, 
3g, 4g].
22 Disable the Firewall features on the 
interface or enable the interface in the 
security zone (see Firewall 
configuration).
esr(config-subif)# ip firewall 
disable
esr(config-subif)# security-zone 
<NAME>
<NAME> – security zone name, 
set by the string of up to 31 
characters.
23 Activate USB modem. esr(config-cellular-modem)# 
enable