Model 4970 T1/E1/PRI VoIP Gateway

PSTN
Up to four T1/E1/PRI ports
(NE/TE)
Signaling support (ISDN DSS-1,
NI-2, Q.SIG, CAS Robbed bit
loop and ground start, E&M,
immediate, wink, double wink)
ISDN AOC/ECT
ISDN speech, audio & data (Fax
Gr 4, UDI 64, RDI64)
ISDN supplementary services
R2/MFC-R2 (Q.400–Q.490 and
configurable country profiles),
Fallback relays on four-port
versions
VoIP
SIPv2 over IPv4 & IPv6 (SIP
Info, Update, PRACK, Privacy,
Refer), B2BUA (max. 80 calls***)
Optional SIP-TLS & SRTP*, SIP
Registrar*, SIP Transcoding*

Voice Processing
Codec G.711 a-law/mu-law,
G.723, G.729ab, G.726, G727,
T.38 fax relay (9.6 k, 14.4 k)
G.711 transparent fax and
bypass
128 ms echo cancellation
Call Routing and Services
Regular expression call routing
and manipulation, number
blocking, short-dialing, digit
collection, distribution and
hunt groups
Connectivity
Single 10/100/1000Base-T
Ethernet port
Auto-MDIX
DHCP Client
DHCP Server
PPPoE Client (multi-session)
VLAN support
IPv4 & IPv6 Dual Stack
ICMP

ACL, Stateful Firewall
DNS, DynDNS
SNTP Client
VPN IPsec*, L2TP*,
OpenVPN*
IP Quality of Service
Voice priority
DownStreamQoS
Traffic management, shaping
policing
IEEE 802.1p, TOS, DiffServ
labeling

IEEE 802.1Q, VLAN tag inser-
tion/deletion 4,096

Management

Web/HTTP, CLI with local con-
sole & remote Telnet access

TFTP, HTTP, HTTPs, TR-069

configuration & firmware load-
ing

SNMP MIB 1, 2, 3 and prod-
uct MIB

Secure autoprovisioning for
firmware & unit/subscriber
configuration
Built-in diagnostic tools (trace,
debug, call generator)
Power & Packaging
Desktop metal chassis
Dimensions:
30.1W x 4.5H x 18.1D cm
(11.9W x 1.8H x 7.1D in.)
Weight: < 30 oz (850g)
Internal Power: 100–240 VAC
(50/60 Hz)
Power Consumption < 15W
Operating Environment
Operating temperature: 32 to
104° F (0 to 40°C)
Operating humidity: up to
90%, non-condensing
Compliance
EMC: EN55022 and EN5502 •
Safety: EN 60950 • CE • FCC

Part 15 Class A; Part 68; CS-
03

Specifications