Final test — IMS — the call as an internet session

E1 After TS 24.229, which document takes the most IMS change traffic in this register?

TS 29.165, the interface between two IMS networks, with 190
TS 23.228, the stage 2 description of IMS itself, with 92
TS 29.562, the 5G system's Home Subscriber Server services, with 230
TS 29.163, interworking with circuit-switched networks, with 228

E2 The founding work plan row is marked Rel-5 and has one document against its name. What does that number record?

That only one company ever filed against it
That the founding work item was cancelled
That almost nothing was written for Release 5
That the store's work item labelling begins on 2015-01-23, a decade after the work

E3 The founding work item's title is 'Provisioning of IP-based multimedia services'. What does that prove about how this course was built?

That nothing here was chosen by reading a title — the rule tests the acronym
That titles were tested and this one was allowed through as an exception
That the founding row was added to the register by hand
That the work plan does not store a title for a row

E4 The IETF protocol alignment work opened in Release 7. What has happened to it since?

It closed in Release 8, once the SIP profile was written
Every release since has carried a continuation of it, each with its own acronym, up to IMSProtoc20-CT
It moved to the IETF and left 3GPP
It was folded into the Release 15 work that put IMS on the 5G core

E5 Release 16 carries 13 IMS work plan rows and also the acronym with more documents behind it than any other. What follows from that pair?

That the row count for Release 16 is wrong
That Release 16 drew fewer documents than any other release
That rows and documents answer different questions, and neither one measures how much work happened
That Release 16 was a small release

E6 TR 23.794 has 190 IMS documents against it and no parsed text on this machine. What may this course do with it?

Copy out the sentence its scope opens with
Quote the conclusions it reached
Cite its clauses like any other document's
Name it and count what was written about it, and quote nothing

E7 SA1 has 88 IMS documents over 7 meetings and CT1 has 2169 over 66. What does that gap show?

What each rung of the ladder costs in paper — deciding what the system must do took 88 documents here, writing the bytes it sends took 2169
That SA1 stopped working on IMS
That CT1 repeats work SA1 has already done
That the record is complete for CT1 and incomplete for SA1

E8 339 of the 345 work plan rows stand at 100 per cent, and 22 acronyms have the word Deleted typed at the front of their own name. What is the recorded status of a piece of IMS work?

Finished, once the percentage reads 100
Not recorded at all — no store here holds a status field for a work item
Finished, once the paper that opened it carries the word approved
Running, unless the name begins with Deleted

E9 Which of the four documents defines the call control protocol built on SIP and SDP?

TS 23.228
TS 22.228
TS 24.229

E10 How many work plan rows of this subject are marked Rel-5?

45
14
64

E11 Why did Release 6 open interworking between IMS and circuit-switched networks?

So that IP-based multimedia could support basic voice calls to and from PSTN, ISDN and GSM/UMTS circuit networks
Because the IETF asked 3GPP to do it
Because the codecs were not finished in time

E12 Which group has the most IMS documents on the local record?

CT1, with 2169
SA2, with 429
The CT plenary, with 221

The final test

Your result