Huawei B311-221 - Page 16

HUAWEI B311-221 LTE CPE
Product Description
2 Technical Specifications
Issue02 (2019-08-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8
Item
Description
Voice
VoIP
(Optional)
Supports G.711a/G.711u/G.726 (-24/-32)/G.722/G.729
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:

Caller ID generation

Call waiting

Call forwarding (unconditional, busy, and no answer
forwarding)

Call hold

Three-way conference
CS
Supports CS voice communication over UMTS and
GSM networks.
Supports circuit switched fallback (CSFB).
Supports the following phone features:

Caller ID generation

Call waiting

Call forwarding (unconditional, busy, and no answer
forwarding)

Call hold

Three-way conference

Originating Identification Presentation/Restriction

Outgoing Communication Barring
VoLTE
(Optional)

Supports AMR-NB codec

Supports AMR-WB codec
Supports SRVCC to UMTS
Supports SRVCC to GSM
Supports in-band/out-band (RFC2833) DTMF