Enterprise IP PBX SMG-500

Key Benefits

IP PBX for up to 500 subscribers
Up to 100 simultaneous calls
Up to 4 E1 flows (RJ-48)
4 LAN ports
Call center functionality
Call recording

Short description
The enterprise IP PBX SMG-500 connects up to 250 SIP subscribers in basic configuration and can be extended to 500 SIP subscribers when acquiring an appropriate lisence.
The E1 ports and SIP trunks can be used for PSTN connection. Analogue phones are connected to SMG-500 via subscriber VoIP gateways, IP phones – directly through the company network. Call records and CDR files are stored on SD card or USB flash drive. It is also possible to upload files to external media and to FTP server automatically.

Use Case

Interfaces

4 Е1 (RJ-48) ports
4 ports of Ethernet 10/100/1000Base-T (RJ-45)
1 port of USB2.0, 1 port of USB3.0
1 slot for SD card
1 COM port (RS-232, RJ-45)

VoIP protocols

SIP, SIP-T/SIP-I
H.323

Advanced SIP/SIP-T/SIP-I features

SIP and SIP-T/SIP-I interaction

TDM protocols

SS7
PRI (Q.931)
Q.699 (PRI and SS7 interaction)

Voice codecs

G.711 (a-law, μ-law)
G.726
G.729 (A/B)
OPUS¹
AMR¹

Voice standards

VAD (Voice Activity Detection)
CNG (Comfort Noise Generation)
AEC (echo cancellation, G.168 recommendation)

Functions

Interactive voice response system (IVR) with graphic editor
DISA – Direct Inward System Access
Call queue:
– Various algorithms for operators selection
– Calls distribution taking into account the client repeated calls
Reporting system for operators/groups of operators (processed calls, missed calls, average timeout, etc.)

Call management

Number modifications before and after routing
Call recording according to parameters
Subscriber lines restriction
Subscriber service mode configuring
Trunk group cut-off
Direct connection of trunk groups
Prefix for few trunk groups
Limiting the number of simultaneous calls to a SIP interface
Ingress load limiting (calls per seconds) for a trunk group

Quality of Service (QoS)

Diffserv assignment for SIP
Diffserv assignment for RTP¹

DTMF

Transmission via INBAND, RFC 2833, SIP INFO, SIP NOTIFY methods

Billing

Billing data is recorded in CDR file. CDR files are written on a local SD disk, USB flash or remote FTP server concurrently
RADIUS Accounting
Supported billing systems:
– Hydra Billing
– LANBilling
– PortaBilling
– NetUP
– BGBilling
Possible integration with other systems

Value Added Services

Call Forwarding:
– Call forwarding on out of service (CFOS)
– Call forwarding on no reply (CFNR)
– Call forwarding unconditional (CFU)
– Call forwarding on busy (CFB)
Call Transfer
Music on Hold (MOH)
Call Hold
Call Hunt
Call Pickup
Busy Lamp Field
Conference, Add-on (CONF)¹
Conference by list¹
3-Way conference
Intercom¹
Paging Call¹
Call Queue
Сall Back when the position in queue is reached¹
Call Recording
PIN Code Access
Follow me
Follow me on no response
Do not disturb (DND)¹

Flexibility

Single file of configuration
Multiple network interfaces creation for telephony (SIP, RTP) with different IP addresses
Operation with multiple dial plans
SS7 signal channel redundancy
Voice activity control (by the presence of RTP or RTCP)¹

Security

Black and white IP addresses lists for registration
Attempts to access the device are logged
Automatic blocking by IP address after unsuccessful login attempts or/and access via http/https/telnet/ssh
List of permitted IP addresses for access to control the device
Access rights delimitation – admin/user
Authentication of SIP subscribers
RADIUS authentication (RFC 5090, Draft-Sterman)

Management and monitoring