Huawei B311-521 Product Description page 16

HUAWEI B311-521 LTE CPE
Product Description
Item
VPN client
SMS
Data service
Voice
Issue01 (2019-09-26)
Description
IPv4v6 dual stack
IPv6 only (Optional , CLAT for LAN side IPv4 device access Internet)
IPv4 only (Optional)
When the CLAT function is enabled, the IPv4 device Internet access
service cannot reach the maximum throughput. Under IPv6 only,
NAT-base service (such as port forwarding and port triggering) is not
available.
VPN pass-through
Support L2TP VPN client
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Support PPTP VPN client
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Writing/sending/receiving
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Writing/sending/receiving extra-long messages
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LTE FDD: DL 150Mbps, UL 50Mbps
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DC-HSPA+: DL 42 Mbps, UL 5.76 Mbps
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HSPA+: DL 21 Mbps (64QAM), UL 5.76 Mbps
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HSPA: DL 14.4 Mbps, UL 5.76 Mbps
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WCDMA PS: DL 384 Kbps, UL 384 Kbps
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WLAN 802.11b/g/n
Supports multi APNs (Optional, one for data, one for voice, and one for
TR-069).
VoIP Supports G.711a/G.711u/G.726 (-24/-32)/G.722/G.729
(Optional) codec.
Supports SIP (RFC3261).
Supports SDP (RFC2327).
Supports RTP/RTCP (RFC1889/RFC1890/RFC3550).
Supports in-band/SIP info/RFC2833 DTMF.
Supports the following phone features:
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CS Supports CS voice communication over UMTS
networks.
Supports circuit switched fallback (CSFB).
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Caller ID generation
Call waiting
Call forwarding (unconditional, busy, and no answer
forwarding)
Call hold
Three-way conference
2 Technical Specifications
8