Following voice codecs are supported | Polycom SIP 3.1 specification

Administrator’s Guide SoundPoint IP / SoundStation IP

Voice Coding Algorithms <codecs/>

The following voice codecs are supported:

				Sample		Effective Audio
Algorithm	MIME Type	Label	Bit Rate	Rate	Frame Size	Bandwidth

G.711μ-law	PMCU	G711mu	64 Kbps	8 Ksps	10ms - 80ms	3.5 KHz

G.711a-law	PCMA	G711A	64 Kbps	8 Ksps	10ms - 80ms	3.5 KHz

G.722	G722/8000	G722	64 Kbps	16 Ksps	10ms - 80ms	7 KHz

G.722.1	G7221/16000	G7221	16 Kbps,	16 Ksps	20ms - 80ms	7 KHz
			24 Kbps,
			32 Kbps

G.722.1C	G7221/	G7221C	24 Kbps	32 Ksps	20ms - 80ms	14 KHz
	32000		32 Kbps
			48 Kbps

G.729AB	G729	G729AB	8 Kbps	8 Ksps	10ms - 80ms	3.5 KHz

Lin16	L16/16000	L16	25.6 Kbps	16 Ksps	10ms	7 KHz
	L16/32000		51.2 Kbps	32 Ksps		14 KHz
	L16/48000		76.8 Kbps	48 Ksps		22 KHz

Siren14	SIREN14/	SIREN14	24 Kbps	32 Ksps	20ms - 80ms	14 KHz
	16000		32 Kbps
			48 Kbps

Siren22	SIREN22/	SIREN22	32 Kbps	48 Ksps	20ms - 80ms	22 KHz
	48000		48 Kbps
			64 Kbps

These codecs include:

•Codec Preferences <codecPref/>

•Codec Profiles <audioProfile/>

Codec Preferences <codecPref/>

Attribute	Permitted	Default	Interpretation
Attribute	Values	Default	Interpretation

voice.codecPref.G711Mu	Null, 1-3	1	Specifies the codec preferences for
			SoundPoint IP 320, 330, 430, 500, 501,
voice.codecPref.G711A		2	SoundPoint IP 320, 330, 430, 500, 501,
voice.codecPref.G711A		2	600 and 601 platforms.
			600 and 601 platforms.
voice.codecPref.G729AB		3	1 = highest
			3 = lowest
			Null = do not use
			Give each codec a unique priority, this will
			dictate the order used in SDP negotiations.

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SIP 3.1 specifications

Polycom SIP 3.1 is an advanced session initiation protocol designed to enhance voice and video communication in various business environments. As a pivotal component of Polycom’s telecommunication solutions, SIP 3.1 offers several features and characteristics that cater to the evolving needs of modern enterprises, particularly those that rely on seamless and efficient communication.

One of the standout features of Polycom SIP 3.1 is its robust interoperability. This protocol supports a wide range of endpoints and platforms, allowing organizations to integrate their existing systems with new technologies effortlessly. This flexibility ensures that businesses can leverage their previous investments while upgrading to the latest communication tools.

Another key aspect of Polycom SIP 3.1 is its enhanced call management capabilities. The protocol facilitates efficient call handling, enabling users to manage multiple calls seamlessly. Features like call hold, transfer, and conferencing are streamlined, which enhances productivity by allowing for efficient collaboration among team members. Additionally, it is optimized for low latency and high-quality audio, ensuring that conversations are clear and free from disruptions.

Security is paramount in today’s digital landscape, and Polycom SIP 3.1 addresses this concern with advanced encryption standards. By integrating security features such as Transport Layer Security (TLS) and Secure Real-time Transport Protocol (SRTP), it protects sensitive communication from unauthorized access and ensures that data remains confidential throughout the call.

Polycom SIP 3.1 also boasts compatibility with various video codecs, making it a versatile choice for video conferencing. This compatibility ensures high-quality video streams, which is essential for effective visual communication in remote meetings. Furthermore, the support for the H.264 codec provides efficient bandwidth usage, making high-definition video conferencing accessible, even in varying network conditions.

Moreover, the protocol provides strong support for presence and instant messaging, which enhances real-time communication among users. This integration of voice, video, and messaging capabilities fosters a more connected and collaborative work environment, allowing teams to engage effectively regardless of their geographical locations.

In summary, Polycom SIP 3.1 stands out as a sophisticated solution tailored to meet the demands of modern business communication. With its emphasis on interoperability, call management, security, video quality, and real-time collaboration, it caters to companies of all sizes seeking to optimize their communication infrastructure and enhance productivity in the workplace. As businesses continue to navigate the complexities of digital communication, Polycom SIP 3.1 remains a compelling choice in the market.