Protocols - 2

Question 1

SCCP

Answer 1

Skinny Client Control Protocol

Used for communication between voice gateways and endpoints. Cisco proprietary.

Question 2

SIP

Answer 2

Session Initiated Protocol

Used for communication between voice gateways and endpoints

Question 3

RTP

Answer 3

Real-Time Protocol
Streaming protocol for voice traffic that works hand in hand with UDP. Provides jitter free sequenced and multiplex communication. Port ranges are 16,384 to 32,767

Question 4

RTCP

Answer 4

Real-Time Control Protocol

Provides packet count, delay, and jitter information for RTP.

Question 5

H.323

Answer 5

Mostly for communication between gateways. Peer-to-peer protocol, configuration is stored on client.

Question 6

MGCP

Answer 6

Mostly for communication between gateways. Centralized configuration stores.

Question 7

SRST

Answer 7

Survivable Remote Site Telephony - Survivability mode, if a WAN connection to a remote site goes down, the router manages the call directly to the PSTN and provides basic telephony services to 911 or between the remote site.